Table of contents
1. Hangzhou Rainbow Import & Export Co., Ltd.
2. Boai New Open Source Medical Technology Group Co., Ltd.
3. Jiaozuo Meida Fine Chemical Co., Ltd.
4. Zhangzhou Huafu Chemical Co., Ltd.
5. Huangshan Boxun Pharmaceutical Co., Ltd.
1. Hangzhou Rainbow Import & Export Co., Ltd.
In 1992, the company's predecessor, Zhejiang Sunflower New Materials Co., Ltd., was established, specializing in PVP production. Mr. Wu Jiaxiang, the chief expert of the national PVP research and development project, served as the general manager. In 2002, the company was restructured into a private enterprise and Hangzhou Sunflower Technology Development Co., Ltd. (STD) was established to continue to develop and produce PVP series of technical and cosmetic products. The company has a GMP production line with an annual output of 600 tons of low molecular weight povidone (povidone K12, K15, K17, K25, K30), 800 tons of high molecular weight povidone (povidone K60, K90, K120), 300 tons of high stability povidone iodine, and 100 tons of sodium chondroitin sulfate.

Product Features
Hangzhou Rainbow Import & Export Co., Ltd mainly produces chemical products, such as povidone, cross-linked povidone, povidone iodine, chondroitin sulfate, etc. The following are the characteristics of these products:
1. Povidone: It is a linear 1-vinyl-2-pyrrolidone synthetic polymer that can absorb toxins. It is usually made into injections and used for certain poisoning diseases.
2. Cross-linked povidone: It is a water-insoluble synthetic cross-linked N-vinyl-2-pyrrolidone homopolymer. It is a white or off-white powder, almost odorless, and hygroscopic. It is insoluble in water, ethanol, chloroform or ether. It has a high capillary/water content, a large specific surface area, extremely strong hydration ability, high and rapid water absorption, strong water absorption and expansion ability, and a swelling coefficient of 2.25-2.30. It also has the same complexing ability as polyvinyl pyrrolidone and can complex a variety of substances. It is often used as a water-insoluble tablet disintegrant, dry adhesive, filler and excipient, etc. It can also be used as a dissolution promoter.
3. Povidone iodine: There are many dosage forms. The solution can be used for skin fungal infections, suppurative dermatitis, small-area mild burns and scalds, and small-area skin and mucosal wounds. The suppository is used for candidal vulvovaginal disease, bacterial vaginosis, mixed infection vaginitis, and hemorrhoids; gels, creams, and vaginal effervescent tablets are used for candidal vulvovaginal disease, bacterial vaginosis, and mixed infection vaginitis; the film is used to treat candidal vaginitis; the gargle is used for oral diseases such as stomatitis, oral ulcers, pharyngitis, pericoronitis, and periodontitis. It can also be used for disinfection before oral surgery and daily oral disinfection and health care.
4. Chondroitin sulfate: There are oral preparations, injections, and eye drops. Oral preparations can lower blood lipids, treat hyperlipidemia, prevent and treat various cardiovascular diseases, treat various pains, promote healing of traumatic wounds, assist in the treatment of diseases such as nephritis and chronic hepatitis, and also have anti-tumor effects; injections are mainly used for the auxiliary treatment of atherosclerotic diseases, neuralgia, neuralgia, and joint pain; eye drops have the effect of promoting corneal wound healing, exudate absorption and eliminating inflammation, and are used for diseases such as keratitis, corneal injury, and corneal ulcers.
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Service Concept
1. Customer first: As an import and export enterprise, we will focus on meeting customer needs, and be committed to providing high-quality commodity procurement and import and export services for domestic and foreign customers, striving to meet customer requirements in terms of product variety, quality, price, delivery time, etc., and take customer satisfaction as an important criterion for measuring service quality.
2. Integrity management: In business activities, we uphold the principle of integrity, truthfully provide customers with information on products, service content and prices, do not defraud or conceal, strictly fulfill contractual agreements, ensure fairness, justice and transparency of transactions, and establish long-term and stable cooperative relationships with customers.
3. Professional and efficient: The company's team members have professional import and export business knowledge and rich industry experience, can provide customers with professional consulting and solutions, efficiently handle orders, customs declarations, logistics and other links, reduce customers' time costs and energy consumption, and ensure that goods can be imported and exported quickly and smoothly.
4. Innovation and enterprising: Pay attention to market dynamics and industry development trends, continuously innovate service models and business content, actively explore new markets and business opportunities, provide customers with more diversified product and service options, drive corporate development with innovation, and create greater value for customers.
5. Win-win cooperation: We attach importance to the cooperative relationship with suppliers, customers, logistics partners and other parties. By establishing a good cooperation mechanism, we can achieve resource sharing, complementary advantages, jointly explore the market, maximize the interests of all parties in the cooperation, and promote the coordinated development of the industry.
2. Boai New Open Source Medical Technology Group Co., Ltd.
The company was founded in 2003 and is headquartered in Jiaozuo, Henan. It is mainly engaged in the production of fine chemical products and precision medical services. It is an enterprise with a certain degree of industry participation in the field of polyvinyl pyrrolidone (PVP). The company's product line covers PVP series, vinyl methyl ether/maleic anhydride copolymer (PVME/MA), etc. The products are used in medicine, daily chemicals, food and other fields, and have passed ISO 9001, HACCP and other quality system certifications. The company occupies a certain share in the domestic PVP market, and its customers cover many countries and regions, but the overall scale and technological influence are still far behind those of international leading companies. The production capacity and product line richness are limited, and it mainly focuses on the needs of the mid- and low-end markets.
●Product Features
1. Basic functionality: PVP series products have solubility, film-forming properties and adhesion, and are suitable for traditional industrial scenarios.
2. Compliance: Some products comply with international standards such as USP and BP, and meet the basic requirements of the pharmaceutical and food industries.
3. Technical stability: Through process improvements, product quality remains stable, and there are certain application cases in the domestic market.
3. Jiaozuo Meida Fine Chemical Co., Ltd.
Founded in 2003, the company is located in Jiaozuo, Henan Province. It is a small and medium-sized manufacturer specializing in polyvinylpyrrolidone (PVP) and fine chemical products. The company has a registered capital of 6 million yuan, a staff size of about 50-100 people, an annual production capacity of about 1,000 tons, and is mainly aimed at the domestic and some overseas markets. The company has basic production capacity in the PVP field, but is limited by scale, technology and funds, and its overall strength is weak, with limited market influence. It mainly serves traditional industrial needs, and there is a significant gap with the leading companies.
●Product Features
1. Basic functionality: Mainly produces basic products such as PVP K series (such as K15, K30, K90), povidone iodine (PVPI), N-vinyl pyrrolidone (NVP), etc., which are suitable for traditional fields such as pharmaceutical intermediates, disinfection and preservatives, and industrial excipients.
2. Compliance: The products comply with international standards such as USP and BP, but no higher-end certifications (such as FDA and EU CEP) are mentioned. The technical indicators are mainly to meet basic needs.
3. Process stability: Passed ISO 9001 quality management system certification, but the production equipment and process are relatively traditional, lacking innovative technologies at the forefront of the industry.
●Market performance and strength
1. Limited scale: Annual turnover is about 50 million to 100 million yuan, and the production capacity is only one-tenth of that of the industry's leading companies. The market share is small, and it mainly focuses on the mid- and low-end markets.
2.Low technical investment: The R&D team is about 10-20 people, mainly maintaining the existing product line, and lacks high-end product R&D capabilities.
3. Regional limitations: Customers cover the domestic market and some Southeast Asian and African markets, but the export ratio is not high and the international competitiveness is weak.
4. Potential risks: There have been contract disputes and debt issues, and there are certain challenges in business stability.
4. Zhangzhou Huafu Chemical Co., Ltd.
The company was established in 2009 and is located in Changtai Economic Development Zone, Zhangzhou, Fujian. It has a registered capital of 10 million yuan and a staff size of about 30-40 people. It is a small and medium-sized fine chemical company. It is mainly engaged in the production and sales of polyvinyl pyrrolidone (PVP) series products and related intermediates. The products cover basic models such as N-vinyl pyrrolidone (NVP), PVP K series (such as K15, K30), and povidone iodine (PVP-I), which are used in traditional fields such as medicine, cosmetics, textile printing and dyeing, and coatings. The company has basic production capacity in the PVP field, but is limited by scale, technology and funds. Its overall strength is weak and its market influence is limited. It mainly serves traditional industrial needs, and there is a significant gap with leading companies.
●Product Features
1. Basic functionality: Mainly based on conventional PVP products, with basic characteristics such as solubility and film-forming properties, suitable for ordinary industrial scenarios.
2. Compliance: Some products comply with international standards such as USP and BP, but high-end certifications such as FDA and EU CEP are not mentioned. Technical indicators are centered on meeting basic needs.
3. Process stability: Passed ISO 9001 quality management system certification, but the production equipment and process are relatively traditional, lacking innovative technologies at the forefront of the industry.
●Market performance and strength
1. Limited scale: Annual turnover is about 100 million yuan, production capacity is small, market share is low, mainly serving the low-end demand in the domestic and some Southeast Asian, European and American markets.
2. Low technical investment: The R&D team is small in size, mainly maintaining the existing product line, and lacks high-end product R&D capabilities.
3. Regional limitations: The export ratio is not high, the international competitiveness is weak, the business is mainly in the domestic market, and there is a significant gap with the leading companies.
4. Potential challenges: It has been involved in contract disputes and debt issues, and there are certain risks in business stability.
5. Huangshan Boxun Pharmaceutical Co., Ltd.
The company was founded in 2005 and is located in Huangshan, Anhui. It is a small and medium-sized enterprise focusing on pharmaceutical excipients and fine chemical products. The company has a registered capital of about 5 million yuan, a staff size of about 50-80 people, and a limited annual production capacity. It mainly focuses on the domestic pharmaceutical and cosmetics markets, and its business scope is relatively concentrated. Huangshan Bosun Pharmaceutical has basic production capacity in the field of PVP pharmaceutical excipients, but is limited by scale, technology and funds. Its overall strength is weak, its market influence is limited, and it mainly serves traditional low-end needs, lacking the core advantages to compete with industry leaders.
●Product Features
1. Basic functionality: Mainly produces pharmaceutical grade polyvinyl pyrrolidone (PVP), povidone iodine (PVP-I) and other products, with basic properties such as solubility and film-forming properties, suitable for traditional fields such as pharmaceutical tablet adhesives and disinfectants.
2. Compliance: Passed pharmaceutical GMP certification, but no international high-end certification (such as FDA, EU CEP) was mentioned, and technical indicators are mainly to meet domestic standards.
3. Process stability: The production equipment and process are relatively traditional, relying on mature technology, and lack innovative R&D capabilities.
●Market performance and strength
1. Limited scale: Annual turnover is about 30 million to 50 million yuan, production capacity is less than 5% of the industry's leading companies, market share is small, and mainly serves domestic small and medium-sized pharmaceutical companies and daily chemical customers.
2. Low technology investment: The R&D team is less than 10 people, mainly maintaining the existing product line, and there are no public patents or technological breakthroughs.
3. Regional limitations: The business is concentrated in East China, the export share is extremely low, and the international competitiveness is weak.
4. Business stability: There has been no major negative information in recent years, but the company has low exposure in public industry information, which is significantly different from leading companies.
Polyvinyl polypyrrolidone is widely used in the chemical industry, and its bonding reaction has a key impact on material performance. This substance is often used as a disintegrant for drug tablets, which can accelerate the release of drugs in the body; in cosmetics, it can act as a thickener to improve product texture.
Q: What are the main uses of polyvinyl polypyrrolidone?
A: It is used as a disintegrant in medicine to help drugs disperse quickly; in cosmetics, it is used as a thickener and can also be used in food, coatings and other industries.
Q: What is the bonding reaction of polyvinyl polypyrrolidone?
A: It is the process of forming chemical bonds between its molecules or with other substances, which can change the stability, adsorption and other properties of the material.
Q: What are the advantages of polyvinyl polypyrrolidone in industrial production?
A: It has good solubility, adsorption and chemical stability, can improve product quality and performance, and has a wide range of applications.
Q: Is polyvinyl polypyrrolidone safe for the human body?
A: It is safe within the prescribed dosage and range, and is commonly used in the pharmaceutical and food industries, but excessive exposure or people with special physical conditions may have adverse reactions.
Q: How to store polyvinyl polypyrrolidone?
A: It should be stored in a cool, dry, well-ventilated place, avoid direct sunlight and moisture, and stay away from fire and oxidants.
Q: Is the production process of polyvinyl polypyrrolidone complicated?
A: It is relatively complicated, involving multiple steps such as polymerization and cross-linking, and requires precise control of reaction conditions to ensure product quality.
Q: What solvents can polyvinyl polypyrrolidone dissolve in?
A: It can be dissolved in a variety of polar and some non-polar solvents such as water, ethanol, and chloroform.




