Introduction
Weihai Jinwei ChemIndustry Co., Ltd. (威海金威化学工业有限责任公司) is a Chinese fine-chemical manufacturer specializing in ultraviolet (UV) absorbers, phosphazene flame retardants, and related plastic additives. Established in May 1994, the company reports a total annual capacity of 11,700 tonnes and operates from a 188,000 m² site in Weihai, Shandong, with about 500 employees and dedicated R&D and testing facilities. Its product portfolio is centered on benzotriazole-type UV absorbers such as UV-326, UV-327, UV-328, UV-329, UV-360, UV-234, UV-3030, and UV-1600, together with HPCTP, a phosphazene flame retardant.
In the plastics industry, Jinwei occupies a specialized position in performance additives that improve durability, weatherability, and fire safety in polymer materials. Its products are used in applications where plastics must retain properties under sunlight, heat, and long service life, including electronic products, automotive components, medical devices, coatings, textile auxiliaries, and petrochemical-related downstream sectors. Company and local-government sources describe Jinwei as a technologically focused enterprise with a strong R&D emphasis, and Chinaplas lists it as a specialized and innovative enterprise in China.
History and development
Jinwei was founded in 1994 and built its business around petrochemical additives and fine chemicals, with UV absorbers and phosphazene flame retardants becoming its core product lines. Over time, the company expanded from a specialized additive producer into a broader platform for specialty chemicals and functional materials, including the creation of a materials technology company in 2019 to support further development in high-performance materials.
A major development step came with capacity expansion in its flame-retardant business. Local reporting indicated that Jinwei’s third-phase technology project was intended to increase an original 1,000-ton flame-retardant line to 5,000 tons, reflecting the company’s move from niche production toward larger-scale industrial supply. More recent municipal reporting described new product development in phosphazene flame retardants, including the GWFR-08 product, which had reached industrialization readiness and was being prepared for production based on customer demand.
Public materials also show a continuing shift toward more advanced and customized products. Local-government coverage in 2024 described Jinwei as investing in specialized chemical R&D for high-end segments such as new energy vehicles, medical applications, and AI/5G-related materials, while maintaining export-oriented production for overseas markets.
Business operations and segments
Jinwei’s business is organized around three main technical categories:
- UV absorbers
- Phosphazene flame retardants
- Specialty fine-chemical additives
The company’s manufacturing system reportedly includes standardized workshops, reaction equipment, drying and purification operations, and in-house quality control and R&D functions. A 2026 local-government report described a production hall with 34 reactors operating through processes such as distillation, crystallization, and dissolution, followed by drying before shipment. This indicates a process-intensive operation suited to high-purity specialty chemical production.
The company’s reported end-market orientation is strongly export-driven. Government and company sources say its products are shipped to Europe, the United States, Japan, South Korea, and other overseas markets, alongside domestic supply. Public product-listing platforms also show a broad catalog of additive products under the company name, reinforcing its role as a supplier to polymer and chemical value chains.
Products and technologies
Jinwei’s best-known products are benzotriazole UV absorbers and phosphazene-based flame retardants.
Key product families
- UV-326
- UV-327
- UV-328
- UV-329
- UV-360
- UV-234
- UV-3030
- UV-1600
- HPCTP (phosphazene flame retardant)
Technical role in plastics
UV absorbers are used to limit polymer degradation caused by sunlight and weathering, helping maintain appearance, mechanical integrity, and service life in outdoor or light-exposed applications. Flame retardants based on phosphazene chemistry are used to improve fire performance while supporting the requirements of high-end applications that demand thermal stability and material integrity.
Company descriptions emphasize that UV-329, UV-234, UV-3030, UV-1600, and HPCTP are among its more competitive offerings. Local reporting also indicates ongoing work on new formulations, with Jinwei said to develop multiple new products per year and move selected products from laboratory stage into production.
Process and capability notes
- The company reports standardized production workshops and dedicated R&D and testing facilities.
- Its process flow includes reaction, distillation, crystallization, dissolution, and drying steps.
- It maintains in-house technical capacity for product development and industrialization, including special-chemicals research.
Applications and end markets
Jinwei’s additives are primarily used in industries that require durability, light stability, and flame resistance.
Main application sectors
- Plastics and polymer processing
- Electronics and electrical materials
- Automotive components
- Medical and healthcare-related materials
- Coatings and surface protection
- Textile auxiliaries
- Petrochemical downstream products
Local-government reporting specifically noted the importance of the company’s additives for plastics used in electronic products, automobile parts, and medical equipment, where long-term weather resistance and fire safety are critical performance attributes. Jinwei has also been described as supplying domestic and foreign petrochemical companies, textile auxiliary producers, and coating enterprises.
Global presence and market position
Jinwei has an export-oriented profile, with official and local sources stating that its products are sold in more than a dozen countries and regions, including Europe, the United States, Japan, and South Korea. The company’s Chinese and English-language materials both stress its specialization in UV absorbers and phosphazene flame retardants and its role as a manufacturer with substantial industrial capacity.
Multiple sources characterize Jinwei as a significant player in its niche. Local reporting in 2021 stated that its UV absorber products held very high shares in domestic and global markets, while later reporting in 2023 and 2024 described the company as a major producer of UV absorbers and phosphazene flame retardants with strong specialization in this segment. Because those figures come from local reporting rather than audited global industry data, they should be treated as company- and region-sourced claims rather than independently verified market statistics.
Chinaplas’ exhibitor listing identifies Jinwei as a specialized and innovative enterprise in China, underscoring its recognized status within the plastics supply chain.
Sustainability and environmental initiatives
Publicly available materials on Jinwei focus more on product performance and technology development than on detailed sustainability disclosures. Even so, the company’s product mix is relevant to industry sustainability trends because additive efficiency and durability can extend polymer service life and reduce premature replacement of plastic parts.
Local reporting also indicates that Jinwei is investing in process automation and production-line upgrading, which can improve consistency and resource efficiency in specialty-chemical manufacturing. At the same time, phosphazene flame retardants and UV absorbers are subject to the broader industry pressure to balance performance needs with regulatory and environmental expectations, especially in electronics, mobility, and consumer-product applications.
Financial performance and economic impact
The company’s financial information is not fully disclosed in the sources available here. However, local reporting indicates substantial industrial output and continued reinvestment in capacity. One 2023 report stated that Jinwei’s 2022 output value reached 3.9 billion yuan, while a 2024 report said the company planned annual production of 6,000 tonnes of chemicals and sales revenue of 5 billion yuan for the year. As these are reported figures from local media coverage, they should be read as management- or locality-based statements rather than audited public financial results.
Jinwei’s economic impact is also visible in its role as a supplier of high-value additives to downstream manufacturers. The company’s output supports the performance requirements of products used in electronics, automotive, medical, and industrial materials, which makes it a link between specialty chemistry and finished polymer applications.
Leadership and corporate governance
Publicly available sources identify Wang Jijing as the legal representative in third-party business listings, and local reporting identifies Wang Guangyao as general manager in 2024 coverage. Official company information also provides structured sales, trading, and CSR contact channels, suggesting a formalized corporate organization.
The company’s governance profile appears to combine family- or founder-linked ownership elements with employee participation in some filings, although the available sources do not provide a full verified ownership map suitable for detailed corporate-control analysis. Public listings and government recognitions indicate that Jinwei has been identified as a high-tech enterprise, a specialized and innovative enterprise, and in some materials as a national-level specialized and innovative “little giant” enterprise, although those designations should be understood according to the specific issuing authority and time of recognition.
Innovations and future outlook
Jinwei’s future prospects are closely tied to demand for high-performance plastic additives in sectors where heat resistance, weatherability, and flame resistance are increasingly important. The company’s R&D-heavy model, links with universities such as Qingdao University of Science and Technology, Yantai University, and Shandong University at Weihai, and its reported annual development of multiple new products suggest a strategy based on incremental innovation and product customization.
The company’s pipeline appears to include:
- New phosphazene flame retardant grades
- Specialized additives for medical and new-energy applications
- Capacity expansion and automation upgrades
- Export-market development through international trade channels and exhibitions
Its challenge is typical of specialty chemical producers: maintaining competitiveness through continuous formulation development, scale-up efficiency, and regulatory compliance while serving demanding global customers in technically sensitive applications.
Summary
Weihai Jinwei ChemIndustry is a specialized Chinese plastics-additives and fine-chemicals company best known for UV absorbers and phosphazene flame retardants. With long-standing manufacturing experience, in-house R&D, export sales, and a clear focus on high-performance polymer additives, it occupies a defined niche in the global plastics materials ecosystem.
References
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CPS+ eMarketplace. (n.d.). WEIHAI JINWEI CHEMINDUSTRY CO., LTD.WEIHAI JINWEI CHEMINDUSTRY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1022356Link