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Company›WEIFANG LIANYIN CHEMICAL CO.,LTD

WEIFANG LIANYIN CHEMICAL CO.,LTD

The company produces flame-retardant masterbatches such as XPS and PP V2 grades along with brominated additives including SBS and methyl octabromoether for polymer applications. It maintains an annual capacity of roughly 15,000 tons, pursues capacity expansions under environmental review, holds ISO 9001 certification, and exhibits at CHINAPLAS.

0 views0 mentionsUpdated October 10, 2026

Introduction

WEIFANG LIANYIN CHEMICAL CO., LTD. (潍坊联银化学有限公司) is a Chinese chemical manufacturer focused on flame-retardant chemical raw materials and related plastics additives, with operations centered in Weifang, Shandong, within the Binhai green chemical industrial area. The company positions itself as an integrated producer and commercial operator serving the plastics industry through products such as XPS flame-retardant masterbatch, PP V2 flame-retardant masterbatch, brominated SBS, methyl octabromoether, and melamine hydrobromide (MHB), which are used to improve fire performance in polymer applications.

The company’s business profile suggests a role in the supply chain for polymer compounding, halogenated flame retardant intermediates, and functional additives used by plastics processors and downstream manufacturers requiring fire-resistant materials. Exhibition and company-directory records identify Weifang Lianyin Chemical as an exhibitor at CHINAPLAS 2026, reflecting its participation in the plastics and rubber industry trade ecosystem.

History and Development

Weifang Lianyin Chemical describes itself as an enterprise integrating production and sales and operating from the Weifang Binhai Economic and Technological Development Zone, an industrial location associated with chemical manufacturing infrastructure. Its public profile indicates a focus on flame-retardant chemistry and related product development, including materials for plastics modification and environmental equipment research and manufacturing.

A notable development milestone is the company’s reported annual output of about 15,000 tons of plastics flame-retardant-related products, indicating a meaningful industrial production scale within its niche. Another milestone is the planned expansion documented in environmental review materials for a project covering 1,500 t/a brominated SBS, 1,500 t/a MHB, and 2,000 t/a methyl octabromoether, showing continued capacity build-out in brominated and nitrogen-containing flame-retardant systems.

The company is also listed among Shandong’s technology-oriented small and medium-sized enterprises and appears in CHINAPLAS exhibitor information with recognition as a specialized and sophisticated enterprise in Chinese industry classifications, pointing to policy support for niche manufacturing capability.

Business Operations and Segments

Weifang Lianyin Chemical operates primarily in the specialty chemicals segment serving plastics flame retardancy. Its business model combines manufacturing with sales operations through affiliated or associated entities, including Beijing Shuangyin Technology Co., Ltd. and Guangzhou Yuqing Chemical Co., Ltd., which are identified as sales-related companies in the firm’s own materials.

The company’s operations appear to cover the following functional areas:

  • Production of flame-retardant chemical intermediates and masterbatches.
  • Sales and distribution through regional commercial affiliates.
  • Product development in flame-retardant chemistry and related environmental equipment.
  • Industrial project expansion subject to environmental review and permitting.

Its product mix indicates participation in both chemical ingredient supply and plastic modification, bridging upstream specialty chemistry with downstream plastics performance requirements.

Products and Technologies

The company’s disclosed product portfolio includes XPS flame-retardant masterbatch, PP V2 flame-retardant masterbatch, methyl octabromoether, brominated SBS, melamine hydrobromide (MHB), and hexaphenoxycyclotriphosphazene. Its website also mentions glass-fiber-related products and environmental equipment, suggesting a broader technical scope than flame retardants alone.

From a plastics-processing perspective, these product classes are used to modify polymer combustion behavior and help meet fire-safety classifications. The company’s masterbatch offerings indicate capability in compounding, where active additives are dispersed in a carrier resin for easier dosing and more uniform processing in extrusion or molding applications.

The planned project documentation provides additional technical detail: it references multiple production lines, a drying workshop, bromine storage, raw-material and finished-goods warehouses, an intermediate tank area, and 165 sets of production equipment supporting the new capacity. The same filing shows that the company’s manufacturing emphasis includes brominated chemistry, a common route for high-efficiency flame-retardant additives in engineering plastics and building-material applications.

Applications and End Markets

Weifang Lianyin Chemical’s products are directed mainly toward plastics flame-retardant applications. Based on the disclosed product categories, the company serves uses such as:

  • Expanded polystyrene insulation materials through XPS flame-retardant masterbatch.
  • Polypropylene applications requiring V-2 flame-retardant performance.
  • Polymer formulations using brominated and phosphorus-nitrogen flame-retardant intermediates.
  • Building and construction materials, where flame-retardant additives are commonly used to improve fire performance.

The company’s orientation toward plastics additives places it in a segment influenced by fire-safety standards, construction-material regulations, and the ongoing replacement or optimization of additive packages in response to environmental and compliance considerations.

Global Presence and Market Position

The company is headquartered in Weifang, Shandong, China, in the Binhai chemical-industrial area. Its market presence appears concentrated in domestic Chinese industrial channels, with affiliated sales entities supporting regional distribution.

Participation in CHINAPLAS, one of the major plastics and rubber exhibitions in Asia, indicates a commercial interface with processors, compounders, and additive buyers in the broader plastics market. Its exhibitor listings and trade-directory presence suggest a specialized niche position rather than a diversified multinational footprint.

Research and Development

Weifang Lianyin Chemical presents itself as a company that emphasizes technology-led production and product development. Its public materials refer to research and production of flame-retardant chemical raw materials and environmental equipment, implying in-house technical activity linked to formulation and process development.

The expansion project for brominated SBS, MHB, and methyl octabromoether suggests continued development of process capacity and product specialization in higher-value flame-retardant intermediates. Its classification as a technology-oriented enterprise also aligns with a business strategy built around specialized chemical know-how rather than commodity volume alone.

Sustainability and Environmental Initiatives

The company’s site placement in a green chemical industrial park reflects the industrial zoning approach used in China to concentrate chemical manufacturing in regulated areas with shared infrastructure and environmental oversight. The environmental filing for its expansion project shows formal engagement with environmental impact assessment procedures for new chemical capacity.

This context is important because brominated flame-retardant chemistry is often assessed through the lens of regulatory control, environmental persistence, and workplace safety. Weifang Lianyin Chemical’s public materials focus on compliant production, quality supervision, and formally reviewed expansion, which are central operating requirements in this segment.

Quality Management and Certifications

The company states that its products are manufactured according to national, industry, and enterprise standards and that it maintains a quality inspection and supervision system. Its materials also report certification to ISO 9001 quality management requirements, referred to in the source text as “19001,” which is best understood as an ISO 9001 quality-management certification claim.

This quality framework is relevant for specialty chemical supply because flame-retardant additives must meet performance consistency, purity, and batch-to-batch reliability expectations from plastics compounders and processors.

Innovations and Future Outlook

Weifang Lianyin Chemical’s future development appears tied to the growth of plastics fire-safety formulations, masterbatch compounding**, and **specialty brominated and nitrogen-containing additives. The company’s disclosed capacity expansion suggests a strategy of scaling core product families rather than moving away from its established niche.

Its continued visibility at industry exhibitions, combined with technical product specialization and regional production capacity, positions it to benefit from demand in construction plastics, insulation materials, and engineered polymer formulations where flame-retardant performance remains a key specification driver.

References

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    CPS+ eMarketplace. (n.d.). WEIFANG LIANYIN CHEMICAL CO.,LTDWEIFANG LIANYIN CHEMICAL CO.,LTD. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1001243Link