Table of contents
1. Hangzhou Rainbow Import and Export Co., Ltd.
2. Jiangsu Zhongzhida International Trade Co., Ltd.
3. Lianyungang Ronghe New Materials Technology Co., Ltd.
4. Quzhou Jianhua Nanhang Pharmaceutical Co., Ltd.
5. Shanghai Dexiang Pharmaceutical Technology 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.
Hot Products
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. Jiangsu Zhongzhida International Trade Co., Ltd.
The company is engaged in the sales of chemical products, technology promotion, daily necessities, electronic products, cosmetics, plastic products and other multi-category trade, and also involves the import and export of goods and technology. Its business is mainly in the trade of general chemicals and daily necessities, and it lacks technical accumulation and market competitiveness in the field of PVP or polymer materials. Its product positioning is basic, its service model is traditional, and its overall scale and industry influence are limited.
Product Features
1. Mainly engaged in chemical raw material trade, with strong versatility
The company mainly acts as an agent for the sale of basic chemical raw materials (such as PVP K30), building materials, plastic products, etc. The products are mainly to meet conventional industrial needs, and do not involve special technical specifications or high-end application scenarios.
2. Diversified categories but lack of core focus
The business covers multiple fields such as chemicals, textiles, electronics, and daily necessities, but each product line has not formed a professional advantage, the technical content is low, and the market competition is dominated by price.
3. Reliance on traditional supply chains and lack of technological innovation
Product procurement is mainly based on standardized raw materials, and independent research and development or technical cooperation is not publicly displayed. Technical services are limited to basic promotion and consulting, and there are no differentiated technical solutions.
4. Limited market coverage, mainly domestic
Mainly serves domestic small and medium-sized manufacturing enterprises, with a low proportion of export business, has not entered the global mainstream supply chain system, and has a weak influence in the international market.
3. Lianyungang Ronghe New Materials Technology Co., Ltd.
It is mainly engaged in the research and development, production and sales of the polymer material polyvinyl pyrrolidone (PVP) series products, including PVPK12, K15, K17, K30, K90, PVPP, PVP-I and other products, which are used in the fields of medicine, cosmetics, water treatment, coatings, etc. Lianyungang Ronghe New Material Technology Co., Ltd. is a regional enterprise with a relatively short establishment time. It has certain basic production capabilities in the PVP field, but its overall scale is small, its technical accumulation is limited, and its products are mainly general-purpose, lacking differentiated competitiveness. Its market coverage is concentrated on domestic small and medium-sized customers, and it has not yet entered the global mainstream supply chain system, and its overall industry influence is relatively weak.
Product Features
1. The product line covers a wide range but the technical content is low
The company mainly produces general PVP products (such as PVPK30, PVPP), which are used in conventional fields such as pharmaceutical excipients, cosmetic film formers, and water treatment flocculants. The product specifications are mainly industrial grade, and there is a lack of high-end customized or technically strong products.
2. Market positioning is mainly based on basic needs
The products are concentrated in the mid- and low-end markets. For example, in the pharmaceutical field, only ordinary tablet disintegrants are provided, and high value-added products such as sustained-release preparations and injection grades are not involved; in the beverage industry, it is mainly used for basic clarification processes, and there is a lack of technical cooperation with international brands.
3. Limited production scale, process stability needs to be improved
The annual supply volume is about 125 tons (such as PVPK15), and the production equipment and processes are mainly based on traditional polymerization technology. There is no public display of breakthroughs in automation or green production technology, and there is a risk of fluctuations in product batch stability.
4. Weak technical service capabilities
Mainly provide standardized product sales, technical support is limited to basic parameter consultation, lack of formula optimization or process solutions for customer needs, and less cooperation with universities or research institutions.
4. Quzhou Jianhua Nanhang Pharmaceutical Co., Ltd.
It is mainly engaged in the research and development and production of N-vinylpyrrolidone (NVP) and downstream polymers (such as PVP K series, cross-linked polyvinylpyrrolidone), alkylpyrrolidone, and is also involved in fine chemical businesses such as polyvinyl chloride (PVC) heat stabilizers. As a regional small and medium-sized enterprise, Quzhou Jianhua Nanhang Pharmaceutical Co., Ltd. has basic production capabilities in the PVP field, but its overall scale is small and its technical accumulation is limited. The products are mainly general-purpose and lack differentiated competitiveness; the market coverage is concentrated in the domestic mid- and low-end markets, and the international influence is weak. Although the company cooperates with scientific research institutions, the efficiency of technology conversion is low and it has not yet formed a significant industry advantage.
Product Features
1. The basic product line covers a wide range, but the high-end is insufficient
The company mainly produces industrial-grade and general pharmaceutical-grade PVP products (such as PVP K30, K90), which are used in pharmaceutical excipients, cosmetic film-forming agents, water treatment flocculants and other fields. The product specifications are mainly general-purpose, lacking high-value-added categories such as injection grade and sustained-release preparations, and the technical barriers are relatively low.
2. Traditional production process and limited production capacity
The annual production capacity is about 5,000 tons, using traditional polymerization technology, the level of equipment automation is general, and there is a risk of fluctuation in product batch stability. It has not publicly displayed green production technology or intelligent upgrade investment, and there is a gap with the large-scale and refined production of industry leading companies.
3. Limited scope of technical cooperation and weak innovation ability
There is preliminary cooperation with institutions such as the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, but the technical achievements are mostly concentrated on the optimization of conventional products, lacking original breakthroughs. Existing patents (such as the preparation method of cross-linked polyvinylpyrrolidone) are mostly process improvement types, and no core technology with market competitiveness has been formed.
4. Market coverage is concentrated in the region, and international influence is insufficient
The domestic market is dominated by small and medium-sized enterprises in the Yangtze River Delta and the Pearl River Delta, and exports account for about 30%, mainly sold to emerging markets such as India and Colombia, and have not yet entered the mainstream supply chain system in Europe and the United States. The customer base is mainly small and medium-sized pharmaceutical and chemical companies, and there is a lack of cooperation cases with internationally renowned brands.
5. Shanghai Dexiang Pharmaceutical Technology Co., Ltd.
It is mainly engaged in the research and development, production and sales of polyvinylpyrrolidone (PVP) series products, including PVP K17, K25, K30, K90, cross-linked polyvinylpyrrolidone (PVPP), copolyvinylpyrrolidone (PVP VA64) and PVP-I complex, etc., which are used in the fields of medicine, cosmetics, water treatment, etc. As a regional enterprise with a long history, Shanghai Dexiang Pharmaceutical Technology Co., Ltd. has basic production capabilities in the PVP field, but its overall scale is small and its technical accumulation is limited. The products are mainly general-purpose and lack differentiated competitiveness; the market coverage is concentrated in the domestic mid- and low-end markets, and the international influence is weak. Although the company has passed ISO certification, its technological innovation capabilities are insufficient and it has not yet formed a significant industry advantage.
Product Features
1. Basic category coverage, lack of high-end extension
The company mainly produces general PVP products (such as PVP K30, K90), which are used in conventional scenarios such as pharmaceutical tablet adhesives and cosmetic film-forming agents. It does not involve high value-added categories such as injection grade and sustained-release preparations, and has low technical barriers.
2. Traditional process and limited production capacity
The traditional polymerization process is adopted, with an annual production capacity of about 6,000 tons (public information), a general level of equipment automation, and a risk of fluctuation in product batch stability. Green production technology or intelligent upgrade investment has not been disclosed.
3. Compliance with quality standards and lack of differentiated advantages
The products meet the standards of the Chinese Pharmacopoeia, the United States Pharmacopoeia, etc., but have not formed unique technical indicators or patented formulas. Compared with industry leaders, there is no significant difference in key performance such as purity and stability.
4. Market positioning is low-end and international influence is weak
Domestic customers are mainly small and medium-sized pharmaceutical companies and daily chemical companies, with export business accounting for about 40%-50%, mainly sold to emerging markets such as Southeast Asia and the Middle East, and have not entered the mainstream supply chain system in Europe and the United States.
Polyvinyl pyrrolidone (PPP) has important applications in many fields. It is a high molecular weight polymer with excellent properties and is often used in the pharmaceutical industry as a binder for drug preparations. In some special scenarios, such as when used with surfactants (SDS), it can play a unique role. In materials science, the adsorption behavior of PPP on oxidized surfaces and its interaction as a capping agent are the focus of researchers. Although PPPs of different molecular weights have different properties, PPPs of a specific molecular weight such as 100,000 g/mol also have potential application value.
Q: What is the main role of polyvinyl pyrrolidone in medicine?
A: In medicine, polyvinyl pyrrolidone can be used as a binder for tablets to help drug molding; it can also be used as a solubilizer to increase the solubility of some poorly soluble drugs.
Q: What are the advantages of using polyvinyl pyrrolidone with SDS?
A: The combination of the two can improve the dispersibility and stability of the system. For example, in cosmetics or certain chemical products, it can make the ingredients better mixed.
Q: What effect does a specific molecular weight of polyvinyl pyrrolidone have on performance?
A: Polyvinyl pyrrolidone with different molecular weights will have different properties such as viscosity, solubility, and film-forming properties. For example, polyvinyl pyrrolidone with a molecular weight of 100,000 g/mol has a large relative molecular weight and may form a tougher film.