Qidi Chemical
PRODUCTS
Diethylbenzene
Qidi Chemical
|
HS Code |
672072 |
| Chemical Formula | C10H14 |
| Molar Mass | 134.22 g/mol |
| Appearance | Colorless liquid |
| Odor | Aromatic odor |
| Density | 0.862 - 0.870 g/cm³ |
| Boiling Point | 181 - 184 °C |
| Melting Point | -84 - -67 °C |
| Solubility In Water | Insoluble |
| Flash Point | 58 °C |
| Vapor Pressure | 0.38 mmHg at 25 °C |
| Refractive Index | 1.495 - 1.497 |
As an accredited Diethylbenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Diethylbenzene packaged in 20 - liter drums for convenient handling and storage. |
| Storage | Diethylbenzene should be stored in a cool, well - ventilated area, away from heat, sparks, and open flames due to its flammability. Keep containers tightly closed to prevent vapor release. Store it in a dedicated chemical storage facility, segregated from oxidizing agents and incompatible substances to avoid potential reactions. Regularly check storage areas for leaks. |
| Shipping | Diethylbenzene is shipped in accordance with strict chemical transport regulations. It's typically transported in specialized containers to prevent leakage, ensuring safety during transit by road, rail, or sea. |
Competitive Diethylbenzene prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8618136850665 or mail to sales6@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: sales6@liwei-chem.com
Historical Development
Diethylbenzene is an organic compound. Its origin originated from the study of chemical sages. In the early years, the public devoted themselves to the decomposition and synthesis of substances. After years of exploration, the preparation method of this compound was obtained.
At the beginning, the preparation method was simple and sparse, the yield was not abundant, and the purity was also lacking. However, chemists aim high and do not give up research. With the passage of time, science and technology have advanced day by day, and the preparation process has become more refined. From the initial simplicity, to the later gradually complex and efficient, the yield has skyrocketed, and the purity has reached a very high level.
This compound is used in the field of industry and scientific research, and its use is gradually widening. From this perspective, the development of Diethylbenzene is the result of the efforts of chemists, and it is also a proof of technological evolution.
At the beginning, the preparation method was simple and sparse, the yield was not abundant, and the purity was also lacking. However, chemists aim high and do not give up research. With the passage of time, science and technology have advanced day by day, and the preparation process has become more refined. From the initial simplicity, to the later gradually complex and efficient, the yield has skyrocketed, and the purity has reached a very high level.
This compound is used in the field of industry and scientific research, and its use is gradually widening. From this perspective, the development of Diethylbenzene is the result of the efforts of chemists, and it is also a proof of technological evolution.
Product Overview
"Overview of Diethylbenzene Products"
Diethylbenzene is an organic compound. It is a colorless liquid with an aromatic gas. In the molecular structure, diethyl is attached to the benzene ring, which is its distinctive feature.
Diethylbenzene has a wide range of uses. In the industrial field, it is often used as a solvent, which has excellent solubility and can dissolve many organic substances. And it is an important chemical raw material. It can be reacted in a series to obtain a variety of high value-added chemicals.
The method of preparation, or the reaction of benzene and ethylene through alkylation, the reaction conditions need to be precisely controlled. Temperature, pressure, catalyst and other factors are all related to the yield and purity of the product.
However, this material also needs to be treated properly. Because it is volatile and flammable, safety procedures should be followed when storing and using it to prevent accidents and ensure the safety of personnel and the environment.
Diethylbenzene is an organic compound. It is a colorless liquid with an aromatic gas. In the molecular structure, diethyl is attached to the benzene ring, which is its distinctive feature.
Diethylbenzene has a wide range of uses. In the industrial field, it is often used as a solvent, which has excellent solubility and can dissolve many organic substances. And it is an important chemical raw material. It can be reacted in a series to obtain a variety of high value-added chemicals.
The method of preparation, or the reaction of benzene and ethylene through alkylation, the reaction conditions need to be precisely controlled. Temperature, pressure, catalyst and other factors are all related to the yield and purity of the product.
However, this material also needs to be treated properly. Because it is volatile and flammable, safety procedures should be followed when storing and using it to prevent accidents and ensure the safety of personnel and the environment.
Physical & Chemical Properties
"On the Physical Properties and Chemical Properties of Diethylbenzene"
Diethylbenzene is also an organic compound. Its physical properties, under room temperature and pressure, are colorless liquids with an aromatic odor. The boiling point is quite high, about 180 degrees, the density is lighter than that of water, and it floats on water. It is insoluble in water, but it can be miscible in organic solvents such as alcohols and ethers.
Its chemical properties are active, and the structure of the benzene ring allows it to undergo many reactions. In case of electrophilic reagents, it is easy to cause substitution reactions, such as halogenation and nitrification. And the side chain ethyl group can also participate in the reaction and can be oxidized to form benzoic acid derivatives. Because of its physical and chemical properties, it is widely used in the chemical industry. It can be used as a raw material for organic synthesis
Diethylbenzene is also an organic compound. Its physical properties, under room temperature and pressure, are colorless liquids with an aromatic odor. The boiling point is quite high, about 180 degrees, the density is lighter than that of water, and it floats on water. It is insoluble in water, but it can be miscible in organic solvents such as alcohols and ethers.
Its chemical properties are active, and the structure of the benzene ring allows it to undergo many reactions. In case of electrophilic reagents, it is easy to cause substitution reactions, such as halogenation and nitrification. And the side chain ethyl group can also participate in the reaction and can be oxidized to form benzoic acid derivatives. Because of its physical and chemical properties, it is widely used in the chemical industry. It can be used as a raw material for organic synthesis
Technical Specifications & Labeling
Diethylbenzene is also an important product in the chemical industry. Its technical specifications and identification (product parameters) are related to the precision of production and the excellence of quality.
Looking at its technical specifications, when it has a pure quality, the impurities must be slight. Its color should be clear and free of impurities. Boiling range, density and other parameters are all fixed to ensure accuracy and meet the needs of production.
As for the identification (product parameters), the name must be stated on the package, marked with the words Diethylbenzene, and accompanied by a warning to show its characteristics and prevent problems before they occur. Parameters such as content and batch must also be detailed in order to check and trace and ensure the continuity of quality. Therefore, the essential meaning of Diethylbenzene product technical specifications and identification (product parameters) is also obtained.
Looking at its technical specifications, when it has a pure quality, the impurities must be slight. Its color should be clear and free of impurities. Boiling range, density and other parameters are all fixed to ensure accuracy and meet the needs of production.
As for the identification (product parameters), the name must be stated on the package, marked with the words Diethylbenzene, and accompanied by a warning to show its characteristics and prevent problems before they occur. Parameters such as content and batch must also be detailed in order to check and trace and ensure the continuity of quality. Therefore, the essential meaning of Diethylbenzene product technical specifications and identification (product parameters) is also obtained.
Preparation Method
In the process of making diethylbenzene, the raw materials and production process are the key. Benzene and ethylene are often used as raw materials, and under specific catalytic conditions, the two meet and react. The reaction step is to first adsorb benzene and ethylene on the surface of the catalyst, and then the two blend to react to produce diethylbenzene. The catalysts used are mostly molecular sieves, and their activity and selectivity are quite good, which can promote the reaction to proceed efficiently. During the reaction, it is necessary to strictly control the temperature and pressure to ensure that the reaction follows the expected path. If the temperature is too high, the side reactions will increase; if it is too low, the reaction will be delayed. Through this process, the product of diethylbenzene can be obtained. Its purity and yield are related to the production efficiency, and all links need to be carefully adjusted to achieve the ideal
Chemical Reactions & Modifications
The old Diethylbenzene is also the thing that transforms. Its transformation is reversed, and we investigate it. The method of the past can be obtained, but there are still some problems. Its inversion is harsh, and the rate of improvement is not high, and the obtained things are also more.
We are exhausted in thinking, seeking the quality of its transformation. Enter with new methods, and the inversion of the inversion, the order of the inversion. The result is also the effect. The inversion is not good, and the rate of improvement is greatly increased.
This transformation, the creation of Diethylbenzene, is extraordinary. Not only can it reduce its cost, but it can also improve its quality, so that this product can be used more effectively in the field of engineering and scientific research, so as to promote the development of technology.
We are exhausted in thinking, seeking the quality of its transformation. Enter with new methods, and the inversion of the inversion, the order of the inversion. The result is also the effect. The inversion is not good, and the rate of improvement is greatly increased.
This transformation, the creation of Diethylbenzene, is extraordinary. Not only can it reduce its cost, but it can also improve its quality, so that this product can be used more effectively in the field of engineering and scientific research, so as to promote the development of technology.
Synonyms & Product Names
"On the namesake and trade name of diethylbenzene"
The name of diethylbenzene is also a chemical substance. Its namesake name, either derived from the characteristics of its chemical structure, or followed the naming tradition of ancient times. As for the trade name, it is taken by merchants to recognize the characteristics and uses of its substance, so as to facilitate the market.
Guanfu diethylbenzene, its namesake names, are all related to the theory of chemistry. Either according to the composition of its molecules, or according to the nature of its reactions. And the trade name often implies practical meaning, or indicates its high purity, or indicates its wide application.
For example, there is a name for its stability, which means that it can be maintained in the industrial process; there is also a name for its special output, which gives it a different value. This namesake and the name of the commodity complement each other, assisting the discernment of research in the academic world and promoting the smooth flow of trade in the business world. Although the two names are different, they both refer to the diethylbenzene, which jointly promotes the function of chemical things in the world.
The name of diethylbenzene is also a chemical substance. Its namesake name, either derived from the characteristics of its chemical structure, or followed the naming tradition of ancient times. As for the trade name, it is taken by merchants to recognize the characteristics and uses of its substance, so as to facilitate the market.
Guanfu diethylbenzene, its namesake names, are all related to the theory of chemistry. Either according to the composition of its molecules, or according to the nature of its reactions. And the trade name often implies practical meaning, or indicates its high purity, or indicates its wide application.
For example, there is a name for its stability, which means that it can be maintained in the industrial process; there is also a name for its special output, which gives it a different value. This namesake and the name of the commodity complement each other, assisting the discernment of research in the academic world and promoting the smooth flow of trade in the business world. Although the two names are different, they both refer to the diethylbenzene, which jointly promotes the function of chemical things in the world.
Safety & Operational Standards
"Code of Safety and Operation of Diethylbenzene Products"
Diethylbenzene is also a chemical product. Its characteristics are special, and it is related to safety and operation regulations, which cannot be ignored.
At the safe end, diethylbenzene is flammable, and in case of open fire or hot topic, it is dangerous, or it may cause fire. And if its gas is inhaled into the human body, it may be light or uncomfortable, and in severe cases, it may hurt the organs and damage health. Therefore, in places where it is stored and used, ventilation must be strictly set up to make the airflow smooth and avoid accumulation. It is also necessary to prepare fire extinguishing equipment, just in case.
As for the rules of operation, the operator should first understand its nature, receive professional training, and know its advantages and disadvantages. When taking it, be sure to be careful, according to the degree of the device, do not spill. When storing, it should be placed in a cool and ventilated place, protected from heat and light, and separated from oxidants and other substances to avoid chemical reactions, which will cause disaster. When handling, it should also be handled with care to prevent damage and leakage.
If there is a leak, quickly cut off the source, prohibit fireworks, and leave people in a safe place. Small leaks can be adsorbed with sand and other substances to clear them; large leaks require careful measures, gather the strength of everyone, and deal with them in a safe manner to minimize the harm.
All these are regulations for the safety and operation of diethylbenzene products. Practitioners should keep them in mind and act on them to ensure safety.
Diethylbenzene is also a chemical product. Its characteristics are special, and it is related to safety and operation regulations, which cannot be ignored.
At the safe end, diethylbenzene is flammable, and in case of open fire or hot topic, it is dangerous, or it may cause fire. And if its gas is inhaled into the human body, it may be light or uncomfortable, and in severe cases, it may hurt the organs and damage health. Therefore, in places where it is stored and used, ventilation must be strictly set up to make the airflow smooth and avoid accumulation. It is also necessary to prepare fire extinguishing equipment, just in case.
As for the rules of operation, the operator should first understand its nature, receive professional training, and know its advantages and disadvantages. When taking it, be sure to be careful, according to the degree of the device, do not spill. When storing, it should be placed in a cool and ventilated place, protected from heat and light, and separated from oxidants and other substances to avoid chemical reactions, which will cause disaster. When handling, it should also be handled with care to prevent damage and leakage.
If there is a leak, quickly cut off the source, prohibit fireworks, and leave people in a safe place. Small leaks can be adsorbed with sand and other substances to clear them; large leaks require careful measures, gather the strength of everyone, and deal with them in a safe manner to minimize the harm.
All these are regulations for the safety and operation of diethylbenzene products. Practitioners should keep them in mind and act on them to ensure safety.
Application Area
Diethylbenzene is also used to dissolve things. Its use is in the field of work, which often dissolves and helps to mix and dissolve substances, so that the work of creation is beneficial. It can also be used in the synthesis of other substances, to dissolve the reverse, and to promote the production of new materials.
In the field of materials, it can increase the characteristics of materials, such as improving their performance and quality, making materials more useful. In daily products, such as materials and adhesives, it also has its impact, helping to improve their performance. It can be used in Diethylbenzene, which has an important effect in many fields, and promotes the development of life.
In the field of materials, it can increase the characteristics of materials, such as improving their performance and quality, making materials more useful. In daily products, such as materials and adhesives, it also has its impact, helping to improve their performance. It can be used in Diethylbenzene, which has an important effect in many fields, and promotes the development of life.
Research & Development
Today's research on Diethylbenzene is related to research and progress, and it is quite important. It is complex in nature and has the quality of aromatic hydrocarbons, and is widely used in various fields of chemical industry.
At the beginning of research, explore its structure in detail, analyze its molecular state, clarify its bonding formula, and understand its physicochemical properties. Also study the method of synthesis, try various paths, and hope to obtain an efficient way.
In the way of development, consider the increase of its yield, reduce consumption and reduce sources, and also pay attention to its stability. Seek the extension of its application, and find new possibilities for use in the plastics, coatings, medical and other industries. Unremitting research, the research and progress of Diethylbenzene has achieved remarkable results, benefiting all industries and promoting the prosperity of the world.
At the beginning of research, explore its structure in detail, analyze its molecular state, clarify its bonding formula, and understand its physicochemical properties. Also study the method of synthesis, try various paths, and hope to obtain an efficient way.
In the way of development, consider the increase of its yield, reduce consumption and reduce sources, and also pay attention to its stability. Seek the extension of its application, and find new possibilities for use in the plastics, coatings, medical and other industries. Unremitting research, the research and progress of Diethylbenzene has achieved remarkable results, benefiting all industries and promoting the prosperity of the world.
Toxicity Research
The chemical industry is related to people's livelihood, but the study of poisons should not be careless. Today, in terms of Diethylbenzene, the study of its toxicity is quite important.
Diethylbenzene may exist in various chemical processes. After research, it has certain toxicity. If people touch it, it may cause skin discomfort and eye pain; in severe cases, it may damage the organs and endanger life. Its smell can also disturb people's respiratory system, causing chest tightness and asthma.
When studying the toxicity of this substance, it is necessary to be careful with ancient methods and conduct multiple experiments to record its feelings in detail. Identify its harm to life at different doses and durations. Only in this way can we clarify the true nature of its toxicity, provide evidence for protection and governance, ensure the safety of everyone, and avoid the danger of toxic substances.
Diethylbenzene may exist in various chemical processes. After research, it has certain toxicity. If people touch it, it may cause skin discomfort and eye pain; in severe cases, it may damage the organs and endanger life. Its smell can also disturb people's respiratory system, causing chest tightness and asthma.
When studying the toxicity of this substance, it is necessary to be careful with ancient methods and conduct multiple experiments to record its feelings in detail. Identify its harm to life at different doses and durations. Only in this way can we clarify the true nature of its toxicity, provide evidence for protection and governance, ensure the safety of everyone, and avoid the danger of toxic substances.
Future Prospects
Diethylbenzene is also a chemical product. It has not been developed yet, and there is still a way to do it. In today's research and development, this product may be used in the field of engineering, or it can be used in a wide range of fields. Or in the manufacture of materials, it can make the material more and more efficient, and it can be innovative in construction, equipment, etc.
Or in the research and development, it can be used as a special solvent to help the effect and add new force. And the method of synthesis is not precise, the cost may be reduced, and the quantity can be increased. Before it is developed, this thing will be like a star, shining in the world of chemistry, leading to the new process of science and technology, and the possibility of development.
Or in the research and development, it can be used as a special solvent to help the effect and add new force. And the method of synthesis is not precise, the cost may be reduced, and the quantity can be increased. Before it is developed, this thing will be like a star, shining in the world of chemistry, leading to the new process of science and technology, and the possibility of development.
Where to Buy Diethylbenzene in China?
As a trusted Diethylbenzene manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Diethylbenzene supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What are the main uses of diethylbenzene?
In the field of farming, it is an agent for removing weeds and protecting seedlings. Weeders, miscellaneous vines in the field, compete with seedlings for fertilizer, sun, water and soil, causing seedlings to not grow smoothly and farmers to lose. If two herbicides are applied, the weeds will wither and the seedlings will be healthy, ensuring the fertility of agricultural products.
In the context of horticulture, it also has its merits. Garden flowers, if you want them to be beautiful and neat, overgrown weeds will damage their appearance. Two herbicides can remove miscellaneous vines, make the garden scenery quiet and gorgeous.
On pasture land, weeds are overabundant, or contain toxins, harming livestock. Sprinkle two herbs, and the herbs will be destroyed and the pasture will be clean, and the animals can eat lush grass safely, and their bodies will be fat and strong.
Then use two herbs, and follow the method. The dose is moderate, and it should not be too thick to avoid hurting the seedlings and the soil. When applying medicine, it should also be protected from the wind and rain to prevent it from drifting elsewhere and accidentally harming beneficial plants and trees. And its residues may have an impact on the ecology, so it is necessary to observe its changes after use to ensure the safety of the environment. In a word, two herbs are the help of agriculture and gardening, and if they are used well, they will benefit and harm.
What are the isomers of diethylbenzene?
For diethylbenzene, there are several isomers. Its isomerism type covers o-diethylbenzene, m-diethylbenzene, and p-diethylbenzene.
For o-diethylbenzene, its diethyl is based on the adjacent position of the benzene ring. This structure causes the molecule to have a specific spatial conformation. Due to the adjacent diethyl group, the spatial steric hindrance effect is more obvious, which affects both chemical reactions and physical properties. Physical properties such as boiling point and melting point are different from other isomers due to the unique intermolecular forces.
m-diethylbenzene, the diethyl group is in the position of the interphase of the benzene ring. Its spatial structure is different from that of o-diethylbenzene, and the steric hindrance effect is slightly slower. The symmetry of the molecule is In some reactions, the reactivity and selectivity are different from that of o-diethylbenzene.
p-diethylbenzene, the diethyl group is located in the opposite position of the benzene ring. This structure makes the molecular symmetry the best and the steric resistance effect the weakest. In terms of physical properties, the melting point is relatively high, and the intermolecular forces are more orderly due to the more regular molecular arrangement. In terms of chemical properties, due to its stable structure, it shows different activity and selectivity from o-diethylbenzene and m-diethylbenzene in some reactions.
Although all three are isomers of diethylbenzene, due to the different positions of the diethyl group on the benzene ring, the physical and chemical properties are different, and their applications in chemical industry, materials and other fields are also different.
What are the physical properties of diethylbenzene?
Diethylamine is an organic compound with unique physical properties.
Diethylamine is a colorless liquid with a strong ammonia odor at room temperature and pressure. Its boiling point is about 55.5 ° C, which indicates that it is easy to vaporize when the temperature is relatively low. The melting point is -38.9 ° C, that is, it will solidify into a solid state at lower temperatures.
This substance has a lower density than water, about 0.706 g/cm ³, so if it is mixed with water, it will float on the water surface. It has a certain solubility in water and can form hydrogen bonds with water, so it can be partially dissolved in water. At the same time, it can also be miscible with most organic solvents such as ethanol and ether, showing good affinity for organic solvents.
The vapor of diethylamine is heavier than air and can spread to a considerable distance at a low place. In case of open flame and high heat energy, it can cause combustion and explosion. This is because the vapor and air can form an explosive mixture. Its flash point is very low, only -23 ° C. It is a flammable liquid. Special attention should be paid to fire and explosion protection when using and storing.
In addition, diethylamine is volatile and will gradually evaporate in the air, emitting a pungent smell. Its smell is strong and irritating, and it has irritating effects on the eyes, respiratory tract and skin. Protective measures should be taken when people come into contact to avoid damage to the body.
What is the production method of diethylbenzene?
The method of making the second ointment is quite exquisite. It is necessary to prepare all kinds of exquisite materials and make them in ancient methods to obtain this good medicine.
The first thing to do is to choose the best medicinal materials, which is the foundation. Among them, it is necessary to select products with pure texture and mellow medicinal power. Such as ginseng, those who are old enough and of good quality must be taken, which can greatly replenish vitality and is the main medicine of the ointment. Another example is deer horn, which is selected as a young and solid one, to help the yang and improve the essence, and to add the medicinal power of the ointment.
After that, the selected medicinal materials are matched according to a specific ratio. The delicacy of this ratio is related to the efficacy of the ointment. The various medicinal materials complement each other, or replenish qi and blood, or adjust yin and yang, or remove evil and strengthen righteousness. The compatibility is established, so it is soaked in clean water. The soaking time varies according to the characteristics of the medicinal materials, so that the medicinal materials absorb enough water, and the medicinal properties are easy to precipitate.
After soaking, fry slowly over a slow fire. The size of the fire needs to be carefully controlled. If the fire is big, it is easy to burn, which damages the medicinal properties; if the fire is small, it will be insufficient, and the medicinal power will be difficult to produce. When frying, you need to keep stirring to make the medicines evenly heated. When the medicinal juice is thick, remove the residue and take the juice. This juice is the essence of the medicinal materials.
Then put the concoction into the pot, and add high-quality glues, such as Ejiao, staghorn gum, etc. The function of the glue is to make the paste thick and enhance the tonic power. After adding the glue, still boil it over low heat while stirring constantly to prevent sticking to the pan.
When the paste is in the shape of a "flag hanging", that is, the concoction drips like a flag, continuously, add an appropriate amount of honey or rock sugar at this time. Honey moistens the lungs, rock sugar clears the heat, both can be seasoned and can make the paste taste better. Stir well, let cool, put it in a clean container and keep it sealed.
In this way, the production of Eryou ointment is completed, and the method of processing it follows the ancient teachings, integrates the essence of heaven and earth, and gathers the spiritual effects of medicinal materials. It is a good product for healing and health.
What are the precautions for diethylbenzene during storage and transportation?
During the storage and transportation of more than two medicines, it is very important to pay attention to all kinds of matters. When storing, the first priority is the environment. A dry, cool and well-ventilated place must be selected to prevent it from being damp and mildew, causing damage to the drug. Medicine has different properties, and it is suitable to be stored at room temperature. It needs to be stored at low temperature. If it is a fresh medicine, it needs special maintenance to ensure that it does not lose its vitality. In addition, the choice of containers should not be ignored. According to the characteristics of the medicine, the suitable material should be selected to avoid chemical reactions with the medicine and cause qualitative changes.
When transporting, stability is of paramount importance. The medicine must be properly wrapped to prevent it from being damaged by bumps. The control of temperature and humidity during the journey should not be underestimated. Extreme heat and cold can affect the quality of the medicine. In hot summer, when there is a cooling policy to prevent the medicine from being deteriorated by heat; in cold winter, it is necessary to prepare warm methods to prevent the medicine from freezing. And the transportation time is also considered. It is advisable to reach the destination quickly to reduce the impact of the time on the medicine.
When handling, apply force when gentle, and do not make the medicine subject to violent vibration or collision. Due to the different texture of the medicinal materials, whether brittle or soft, rough handling can easily cause breakage, deformation, and damage its quality. And the person handling should know the characteristics of the medicine and operate according to its requirements, and should not act recklessly.
In short, the two remaining medicines are interconnected in storage and transportation, and any loss in any link can cause the quality of the medicine to fail and the effect of the medicine to be difficult. Therefore, it is necessary to be cautious and consider carefully to ensure the efficacy of the medicine and help people with pain.
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