Introduction
KUMYANG (LIANYUNGANG) CO., LTD. is the Chinese manufacturing subsidiary of Kumyang Co., Ltd. of Busan, South Korea, and it operates in the blowing agents and related chemical additives segment of the plastics industry. The company is based in the Lianyungang Economic and Technological Development Zone in Jiangsu Province and was established in October 2005 as a wholly owned foreign-invested enterprise with reported investment of US$8.1 million. Its operations are centered on chemical additives used to create foam structures in polymers and rubber, with applications in footwear, automotive interiors, wallcoverings, and other foamed-plastics products.
Kumyang’s parent company traces its origins to 1955 and built its business around chemical blowing agents, later expanding its portfolio to include other additives and specialty chemical products. In the plastics value chain, the Lianyungang subsidiary serves as a regional production and supply base for the Asia-Pacific market, supporting customers that require controlled foaming performance, process consistency, and product customization. Company materials and trade listings also indicate that the business is associated with products such as modified azodicarbonamide, OBSH-based blowing agents, polymer processing aids, expandable microspheres, masterbatch, and titanium dioxide, which places it within a broader additives ecosystem serving polymers and elastomers.
History and Development
- 1955: Kumyang was founded in Busan, South Korea, initially as a chemical company and later developed a dedicated blowing-agent business.
- 1976–1978: The parent company was listed on the Korea Exchange, and later changed its corporate name to Kumyang Co., Ltd.
- October 2005: KUMYANG (LIANYUNGANG) CO., LTD. was established in Jiangsu as the group’s wholly owned Chinese subsidiary, creating a local manufacturing and commercial base for blowing agents.
- Subsequent expansion: Group materials indicate that Kumyang established multiple China-linked manufacturing sites, including facilities in Lianyungang and Inner Mongolia, to support supply stability and regional distribution.
The company’s development reflects a broader pattern in specialty chemicals: a parent firm built on a mature additive technology establishing overseas manufacturing to serve local polymer processors more efficiently. The Chinese site also appears in customs and trade databases as an exporter and importer of chemical products associated with foaming-agent supply chains.
Business Operations and Segments
KUMYANG (LIANYUNGANG) CO., LTD. is described in company materials as a production and business-development base for Kumyang in China, rather than a diversified plastics compounder. Its core role is to manufacture and supply chemical blowing agents and related additives for the plastics and rubber industries.
The business is closely tied to the group’s broader additive portfolio, which includes:
- Blowing agents for foamed plastics and elastomers
- OPTSA and Benazole, according to parent-company materials
- Related additives and supply-chain products cited in trade listings, including polymer processing aids, expandable microspheres, masterbatch, and titanium dioxide
Reported company and trade information indicates that the Lianyungang site serves global customers and supports manufacturing, traceability, and dispatch functions for industrial buyers. Alibaba supplier information also refers to customization and product-inspection capabilities such as raw material identification, drawing-based customization, and finished-product inspection.
Products and Technologies
Kumyang’s product line is centered on chemical blowing agents, which are additives that release gas during thermal decomposition to form cellular structures in plastics and rubber. This technology is fundamental to lightweighting, insulation, cushioning, and surface texture control in polymer processing.
Key product and technology areas associated with the company include:
- AC blowing agents: The Chinese operation is reported to produce azodicarbonamide (AC)-based blowing agents, a long-established class used in foamed plastics and rubber applications.
- OBSH products: Company and supplier materials identify OBSH-based blowing agents, including branded lines described as nonstaining, low-odor, and suitable for sponge rubber and expanded plastics.
- Modified azodicarbonamide: Trade and supplier databases cite modified grades designed to adjust decomposition behavior and processing windows.
- Specialty foaming additives: Company materials also associate the group with expandable microspheres and other additives used in polymer processing.
Technical notes from Kumyang’s product descriptions indicate that OBSH-based materials are designed to decompose smoothly when heated and to generate a gas mixture dominated by nitrogen, which is relevant for cellular structure control in polymer foaming. The company also emphasizes performance characteristics such as nondiscoloring, nonstaining, and odorless behavior in selected grades, reflecting the requirements of consumer-facing applications such as footwear and interior components.
Applications and End Markets
Kumyang’s additives are used in a range of foamed-material applications across the plastics and rubber value chain. Major end markets associated with the company include:
- Footwear: Especially foamed components and midsoles in branded athletic shoes.
- Automotive interiors: Foamed parts and interior materials where light weight and surface quality matter.
- Wallcoverings and decorative materials: Applications where controlled foaming supports texture and material performance.
- Rubber processing: Sponge rubber and elastomeric materials using chemical blowing agents for cellular structure formation.
- Expanded plastics: Foam-forming polymer systems requiring controlled gas release and thermal decomposition.
Parent-company materials state that Kumyang’s additives have been used in products associated with global brands in automotive and sports footwear supply chains, which underscores the company’s orientation toward specification-driven industrial markets rather than commodity plastics.
Global Presence and Market Position
Kumyang’s corporate materials describe a geographically distributed organization with headquarters in Busan, manufacturing in China, and additional locations in China, the United States, and Germany. The Lianyungang subsidiary functions as the group’s Chinese production and sales base, linking the company to regional and export markets.
Public company materials and third-party trade profiles indicate that the Lianyungang entity has an established export history and serves overseas customers in the polymer and foam-additives supply chain. The business has also been identified on the ChinaPlas exhibitor platform as a plastics and rubber supplier, reinforcing its position within the industrial additives ecosystem rather than the broader commodity plastics sector.
Research and Development
Kumyang’s parent company places substantial emphasis on technology development in blowing agents and related chemical additives. Its corporate materials describe long-term development efforts aimed at high-value products and application expansion, particularly in foamed materials used in automotive and footwear manufacturing.
At the Chinese subsidiary level, the company presents itself as supporting global customers through product development, stable supply, and responsive service. The observable product range suggests an R&D focus on:
- Decomposition-temperature control
- Gas-generation profile management
- Color and odor reduction
- Compatibility with specific polymer matrices, including EVA, LDPE, PVC, and sponge-rubber systems
These attributes are important in industrial foaming because processing windows, cell structure, surface appearance, and odor control can materially affect end-product performance.
Sustainability and Environmental Initiatives
Chemical blowing agents occupy a technically sensitive position in plastics manufacturing because their environmental profile depends on formulation, processing conditions, and downstream use. Kumyang’s product descriptions emphasize certain grades as pollutant-free or otherwise improved in processing behavior, which suggests an effort to align product performance with industrial environmental expectations.
The company’s materials also reference products designed to reduce discoloration, staining, and odor, characteristics that can support cleaner processing and broader use in consumer products. At the same time, blowing-agent manufacturing is subject to environmental oversight because it involves chemical handling, decomposition byproducts, and waste-management considerations within industrial production facilities.
Quality Management and Trade Capabilities
Third-party supplier listings indicate that the company offers raw-material identification and traceability, finished-product inspection, and customized production support. These capabilities are typical of suppliers serving specification-based industrial customers in the plastics and rubber sectors, where batch consistency and process reproducibility are critical.
Trade databases also show sustained export activity and multiple buyer relationships, including shipments associated with North American and other international customers. This pattern is consistent with a supplier that participates in global additive supply chains rather than a purely domestic specialty-chemicals business.
Financial Performance and Scale
Company material states that the Lianyungang subsidiary employs about 55 people and reports annual output value of around RMB 400 million. The same material identifies annual production of 12,000 tonnes of AC blowing agent in China, indicating a meaningful industrial-scale operation within the specialty additive segment.
The broader Kumyang group is publicly listed in Korea, and its consolidated reporting identifies the foaming-agent division as one of several business segments, alongside battery-materials and resource-development activities. Within that group structure, the Lianyungang company represents the China-based manufacturing arm of the foaming-agent business.
Innovations and Future Outlook
Kumyang’s future in the plastics industry is likely to remain tied to the evolution of foamed polymer technologies, especially in footwear, automotive interiors, insulation-adjacent materials, and specialty rubber products. The company’s technical positioning in OBSH, AC, and related blowing agents suggests continued emphasis on process control, application-specific performance, and product grades tailored to customer specifications.
Industry demand trends that favor lighter-weight materials, efficient processing, and consistent foam morphology are likely to support the relevance of chemical blowing agents, while regulatory and environmental pressures will continue to shape product development priorities. For Kumyang, the strategic significance of the Lianyungang site lies in its role as a regional production base linking Korean technical know-how with Chinese manufacturing scale and international distribution.
References
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CPS+ eMarketplace. (n.d.). KUMYANG (LIANYUNGANG) CO., LTD.KUMYANG (LIANYUNGANG) CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1023885Link