Offers to Sell

Sheet Size : A4 (210mm x 297mm) Substance : 80gsm Brightness : 102-104% above Color : white Whiteness : CIE167 Grade : All purpose Premium Paper Sheet in Ream : 500 Roughness : 140ml/Min Thickness : 110um Opacity : 95% Ream box : 5 Ream Quality : Very High Imported 100% Virgin Wood Pulp Grading : A Thickness : 106cm Capability : High Speed Copying 100ppm, Laser Capable,Inkjet Capable, Fax Capable Moisture Control : Makes the sheets stay flat in the copier and enchances runability. Low Dust Content : Minimizing Your copier runing cost. Good Opacity : Double sided copying of the best quality. Smoothness : Improving Printing Quality. Bulky Sheet : Enhancing smooth runnability

Minimum Order: 7800

Specifications: : Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Specifications: : Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Specifications: : Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Specifications: Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Spec: Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Best quality paper guarantee Specifications: Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Specifications: Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Premium paper Higher quality guarantee Specifications: Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping For more information,feel free to contact us

Minimum Order: 8000

Specifications: : Sheet Size:210mm x 297mm, International Size A4 Quality: 100% Virgin Wood Pulp Whiteness = 102-104%,Natural White Capability: High Speed Copying100ppm, Laser Capable,Inkjet Capable, Fax Capable. Thickness: 103-110 um Surface roughness TS ml/min: 75-175 Surface roughness BS ml/min: 100-200 Bending stiffness MD: >110 Mn Bending stiffness CD: >50 Mn CIE whiteness: 152-170 Cobb Test: 27-33 g/m2 27-33 Grade paper : High grade Quality : No jam in photocopy machine No double feed Stay flat after copying Leave no dust in the copy-machine Nice appearance-white and clean Nice touch-smooth and bulky No see through-print both sides 1 Box : 5 reams 1 reams : 500 sheets Packaging : plastic wrapping

Minimum Order: 8000

[Zlebar vape][1] shop multi-flavors Energy Drink、ruit Fusion、Orange Soda、Strawberry Donut、Banana Milk、Lush Ice、 Mango Strawberry Ice、Red Apple Lemon、Grape Ice、Pina Colada Rum We have 15 years of oem and odm experience, which makes us more professional. Professional business of various types of e-cigarette products. Currently, it involves 2 factories with about 300 employees and 10 production lines. Reasonable price, high quality, defective rate is less than 0.05%!! With experienced R & D team, focus on high-tech, 24 hours sales service. [1]: http://www.vapemens.com

Minimum Order: 1 bags

1. Input single power, internal digital combination standard sine waves test source output. 2. Phase angle measurement function: measure the phase angle between high voltage side and low voltage side. Measure the turn ratio and angle of “Non integral point” transformer. 3. It can conduct single-phase measurement and three-phase winding automatic test. Three phase turn ratio value, phase angle value, error, tapping position, tapping value can be measured for once. It also can identify connecting group number automatically. 4. Testing results can be displayed in the form of digit and hexagon vector diagram, which makes transformer connecting group can be made out obviously. 5.With blind test function: There is no need to choose connecting method and group. When measuring Y/△、△/Y transformer, no external short-circuit is needed, connecting method can be shifted automatically according to the chosen testing contents. 6. With tapping test function: TTR and TTR error in the position of each tapping switch can be gauged quickly. Just input rated TTR once, instead of inputting over and over again, TTR error in tapping position can be calculated. 7. With functions of turns ratio measurement and voltage TTR measurement. 8. With 5.6-inch LCD, the effect of data & figure display is visualized and fine. 9. With small size and light weight, it is easy to carry. 10. With built-in high capacity chargeable lithium battery. Test can be conducted without any power supply on site, and once the battery is charged fully, it can make measurement for more than 500 times continuously.

Minimum Order: 1 bags

Aromatic hydrocarbons are the collective name for benzene and its carbon and hydrogen-only derivatives, which are hydrocarbon compounds with one or more benzene rings in their molecular structure. The simplest and most important aromatic hydrocarbons are benzene and its congeners toluene, xylene, ethylbenzene, etc. TYPES OF AROMATIC HYDROCARBONS Ethylbenzene P-XYLENE M-Xyle , ne 1,2,4-Trimethylbenzene Mesitylene , AROMATIC HYDROCARBONS BENEFITS Aromatic hydrocarbons, also known as arenes, have several benefits including: Fuel: Aromatic hydrocarbons are used as fuel additives, due to their high energy density and low volatility. Solvents: They are widely used as solvents in various industrial processes, due to their non-reactivity and low toxicity. Intermediates: Aromatic hydrocarbons are used as intermediates in the synthesis of a variety of chemicals such as pharmaceuticals, dyes, and plastics. Aroma: Aromatic hydrocarbons are also used in perfumes, fragrances, and flavors, due to their pleasant aroma. Pesticides: Some aromatic hydrocarbons, such as pyrethroids, are used as insecticides and pesticides. AROMATIC HYDROCARBONS PRODUCTION Aromatic hydrocarbons are a class of organic compounds that contain one or more aromatic rings, such as benzene, toluene, and xylene. These compounds are widely used as raw materials in the production of various chemicals and plastics, such as polyethylene terephthalate (PET) and polyurethane. The production of aromatic hydrocarbons typically involves two main processes: extraction and refining. In the extraction process, crude oil or natural gas is processed to extract the desired hydrocarbons, including aromatics. This process involves fractional distillation, in which the different hydrocarbons are separated based on their boiling points. Once the aromatics are extracted, they undergo a refining process to remove impurities and convert them into the desired products. This refining process may involve various techniques, such as catalytic reforming, which converts naphtha into higher-octane aromatics; alkylation, which combines smaller molecules to form larger ones; and transalkylation, which converts alkylated aromatics into the desired product. The production of aromatic hydrocarbons is a complex process that requires specialized equipment and expertise. The use of advanced technologies, such as catalysts and process control systems, has enabled manufacturers to produce high-quality aromatics efficiently and cost-effectively. In addition to their use as raw materials in the production of chemicals and plastics, aromatic hydrocarbons are also used as solvents, fuels, and intermediates in the manufacture of pharmaceuticals and other products. They play a vital role in many industries and are essential in modern society. WHY CHOOSE TOPFINE AROMATIC HYDROCARBONS producing high-quality aromatic hydrocarbons that meet strict industry standards and customer requirements.  Competitive pricing: TOPFINE may offer competitive pricing for their aromatic hydrocarbon products, ensuring that customers receive good value for their investment. Excellent customer service: TOPFINE may prioritize providing excellent customer service and support, ensuring that their customers' needs are met and questions are answered in a timely and helpful manner. Expertise: TOPFINE may have extensive experience and knowledge in the production and supply of aromatic hydrocarbons, which enables them to provide tailored solutions to meet specific customer needs. Reliability: Customers may trust TOPFINE to consistently provide reliable and timely delivery of their products. Customization: TOPFINE may be able to provide customized products and solutions to meet the unique requirements of their customers. AROMATIC HYDROCARBONS APPLICATIONS Aromatic hydrocarbons have a wide range of applications in various industries. Some of the common applications of these compounds are: Production of fragrances and flavors: Aromatic hydrocarbons are used as key ingredients in the production of fragrances and flavors. They help to create the characteristic aromas and tastes of various products, such as perfumes, cosmetics, and food products. Production of plastics: Aromatic hydrocarbons are used as raw materials in the production of various types of plastics, including polyethylene terephthalate (PET) and polyurethane. These plastics are used in a wide range of products, such as packaging materials, textiles, and construction materials. Production of synthetic fibers: Aromatic hydrocarbons are used in the production of synthetic fibers, such as nylon and polyester. These fibers are used in various applications, including clothing, upholstery, and carpets. Production of detergents: Aromatic hydrocarbons are used as surfactants in the production of detergents and cleaning products. They help to reduce the surface tension of water and improve the cleaning performance of these products. Production of fuels: Aromatic hydrocarbons are used as components in gasoline and diesel fuels. They help to improve the octane rating of gasoline and the cetane rating of diesel, which improves the performance of these fuels. Production of pharmaceuticals: Aromatic hydrocarbons are used as intermediates in the production of various pharmaceuticals, such as antibiotics, anti-inflammatory drugs, and anticancer drugs. As a professional fine chemicals manufacturer, Topfine chemical is a leading distribut of chemistry and related innovative products and services, delivering thousands of products from industrial to fine chemicals in china. Because of abundant distribution network, ensure deliver goods fast with precision and reliability. Now the price of acid phthalic is reasonable, if you are interested, please contact us.

Minimum Order: 1 bags

pharmaceutical intermediates The so-called pharmaceutical intermediates, that is, the production process of pharmaceutical products, the use of raw materials, materials, excipients, and other intermediate pharmaceutical products. In fact, many pharmaceutical intermediates manufacturers believed that it is some chemical raw materials or chemical products used in the process of drug synthesis. TYPES OF PHARMACEUTICAL INTERMEDIATES Morpholine 4-Methylmorpholine< , br>4-Methylmorpholine N-oxide READ MORE 2-(2-Aminoethoxy) Ethanol Isopropylamine Triethylamine 121-44-8 N,N-Dimethylacetamide 127-19-5 2-Butyl-4-chloro-5-formylimidazole , Triphosgene Phosphorus Oxychloride Phosphorus Trichloride 2-Chlorobenzaldehyde 4-Chloroben , zaldehyde 6,8-Epitrithio-Octanoic Acid P-toluic Acid M-toluic Acid O-toluic Acid Tosyl Chloride P-Toluenesulfonamide Nitrile Coa , l Chemical Hydrogen Peroxide Raw Material INTERMEDIATE PHARMACEUTICAL PRODUCTS APPLICATIONS Intermediate pharmaceutical products have a wide range of applications in the pharmaceutical industry. Some of the common applications are: API synthesis: Intermediate pharmaceutical products are used as building blocks in the synthesis of Active Pharmaceutical Ingredients (APIs). They serve as starting materials for the synthesis of complex organic molecules, which are then further processed to produce the final API. Process optimization: Intermediate pharmaceutical products can be used to optimize the manufacturing process of APIs. By using intermediates that are easier to synthesize or purify, the overall process efficiency can be improved, leading to cost savings and higher yields. Drug discovery: Intermediate pharmaceutical products can be used in drug discovery to identify new drug candidates. By synthesizing and testing different analogues of known drugs, new compounds with improved properties can be identified. Chemical research: Intermediate pharmaceutical products are also used in chemical research to develop new synthetic methodologies and explore new chemical reactions. They serve as valuable tools for chemical synthesis and can help advance the field of organic chemistry. Contract manufacturing: Intermediate pharmaceutical products can be supplied to contract manufacturing organizations (CMOs) that specialize in the production of APIs. These CMOs can use the intermediates to synthesize APIs on behalf of pharmaceutical companies. In summary, intermediate pharmaceutical products have a range of applications in the pharmaceutical industry, including API synthesis, process optimization, drug discovery, chemical research, and contract manufacturing. They play a crucial role in the development and production of drugs and are essential in the pharmaceutical supply chain. WHAT CAN BE PHARMACEUTICAL INTERMEDIATES USED AS? Pharmaceutical intermediates can be used in several ways in the synthesis and production of pharmaceutical drugs:  Building blocks: They can be used as building blocks to create the active pharmaceutical ingredient (API) with the desired properties and potency. Starting materials: They can be used as starting materials for chemical reactions that produce the final API. Improving manufacturing processes: They can be used to improve the efficiency, yield, and safety of the overall pharmaceutical manufacturing process. PHARMACEUTICAL INTERMEDIATES CHALLENGES The production of pharmaceutical intermediates faces several challenges, including:  Addressing these challenges requires a combination of technical expertise, process innovation, and effective supply chain management. Companies that can successfully navigate these challenges are well-positioned to provide high- quality pharmaceutical intermediates that meet the needs of the industry. Process optimization: The process of manufacturing pharmaceutical intermediates involves several steps that require careful optimization to ensure efficient and cost-effective production. This requires a thorough understanding of the chemical reactions involved, as well as the properties of the raw materials and intermediates used.  Quality control: Pharmaceutical intermediates must meet strict quality standards to ensure their safety and efficacy in the final drug product. This requires rigorous quality control measures throughout the production process, including testing and analysis of raw materials, intermediates, and final products.  Environmental regulations: The production of pharmaceutical intermediates can have a significant impact on the environment due to the use of hazardous chemicals and waste products. Compliance with environmental regulations is essential to ensure safe and sustainable production practices. Intellectual property: Pharmaceutical intermediates often involve proprietary processes and technologies that are protected by patents. Developing new intermediates or improving existing ones can require significant investments in research and development. Supply chain management: The production of pharmaceutical intermediates often involves multiple suppliers and manufacturers, making supply chain management a complex and challenging task. Ensuring a reliable and cost-effective supply chain is critical to maintaining the production schedule and meeting customer demand. WHAT IS THE DIFFERENCE BETWEEN API AND PHARMACEUTICAL INTERMEDIATE?  API stands for Active Pharmaceutical Ingredient, which is the active chemical substance in a drug product that provides the intended therapeutic effect. Pharmaceutical intermediates, on the other hand, are the compounds that are synthesized during the production of API. In other words, pharmaceutical intermediates are the chemical compounds that are used to manufacture API. These compounds may or may not have any therapeutic effect on their own, but they are essential in the production process of API. Pharmaceutical intermediates are often produced in large quantities and used as starting materials for the synthesis of API. They undergo several chemical reactions and purification steps to form the final API. Pharmaceutical intermediates may also be used as building blocks for the synthesis of other complex organic compounds.  In summary, the main difference between API and pharmaceutical intermediate is that API is the active chemical substance in a drug product that provides the intended therapeutic effect, while pharmaceutical intermediates are the compounds that are synthesized during the production of API. Pharmaceutical intermediates are essential in the manufacturing process of API, but they do not have any therapeutic effect on their own. As one of fine chemical companies, we will do our best to meet all the needs of customers. 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Minimum Order: 1 bags