ZHEJIANG LONGSHENG GROUP CO., LTD

Introduction

Zhejiang Longsheng Group Co., Ltd. is a Chinese specialty chemicals group headquartered in Shaoxing, Zhejiang Province, best known for its textile dyes, dye intermediates, auxiliaries, and related chemical products used by the global textile industry. Founded in 1970 and listed on the Shanghai Stock Exchange in 2003, the company has evolved from a domestic dyestuff producer into a diversified industrial group with businesses that also include inorganic chemicals, auto parts, real estate, and financial investment.

Within the plastics and broader polymers ecosystem, Longsheng is relevant primarily through its specialty chemical intermediates and adjacent industrial chemistry activities, including products such as resorcinol and m-phenylenediamine, which are used in applications linked to synthetic resins, rubber adhesives, aramid materials, and other chemical formulations. Its scale, export orientation, and ownership of DyStar have made it a significant participant in the international dye and textile-chemicals market.

History and Development

Longsheng was established in 1970 and gradually developed a manufacturing base in Zhejiang Province before becoming a public company in the early 2000s. The company’s corporate history reflects a broader shift in China’s chemical industry from local production toward export-oriented, technology-intensive specialty chemicals.

A major turning point came in 2003, when Zhejiang Longsheng listed on the Shanghai Stock Exchange, becoming the first Chinese dyestuff company to list on the exchange, according to company disclosures. The IPO provided funding for projects including m-phenylenediamine and reactive dye capacity expansions.

Another important milestone was the company’s move into global dye leadership through DyStar, which Longsheng gained control of in 2010 via a debt-to-equity transaction. Company materials state that this transaction gave Longsheng a stronger position in key international dye markets and broadened its reach through a large overseas network.

Business Operations and Segments

According to public market disclosures, Zhejiang Longsheng operates through several business segments, with its core activity centered on textile chemicals and intermediates.

Its principal segments include:

Dyes: production of dyes used in textile printing and dyeing.
Intermediates: production of chemicals such as m-phenylenediamine and resorcinol.
DyStar: production of fuels and additives for textile printing and dyeing, through the DyStar business.
Inorganic chemicals: a separate chemical business line supported by company production bases.
Auto parts: a non-chemical industrial segment.
Real estate and financial investment: additional corporate activities reported in company and market profiles.

Company and market data indicate that Longsheng sells products in both domestic and international markets and maintains a substantial overseas commercial footprint.

Products and Technologies

Longsheng’s chemical portfolio is centered on dyes, auxiliaries, and intermediates used in textile coloration and allied industrial formulations. The company describes its products as including eco-friendly dispersed, reactive, and acid dyes, as well as chemical auxiliaries and chemical intermediates.

Key product and technology areas include:

Disperse dyes: used mainly for synthetic fibers and textile printing and dyeing.
Reactive dyes: commonly used for cellulosic textiles such as cotton.
Acid dyes: used in wool, silk, nylon, and related fibers.
M-phenylenediamine and resorcinol: intermediates used in dyes, aramid materials, rubber adhesives, synthetic resins, and related chemical chains.
Inorganic chemicals: a separate technical platform within the group’s industrial chemistry base.

The company also states that it has national and provincial R&D platforms, including a provincial enterprise research institute, a nationally recognized enterprise technology center, a specialized chemical research company, a dye research center, and a postdoctoral workstation. These capabilities suggest that Longsheng competes not only on production scale but also on process development, formulation expertise, and application support.

Applications and End Markets

Longsheng’s products are primarily applied in the textile industry, particularly in printing, dyeing, and finishing operations. Its intermediates also connect the company to broader industrial value chains outside textiles.

Main end markets include:

Textiles and apparel, where dyes and auxiliaries are the core inputs.
Synthetic materials and industrial chemistry, through intermediates such as resorcinol and m-phenylenediamine.
Rubber and adhesives, where chemical intermediates are used in formulation chemistry.
Resins and engineered materials, where selected intermediates serve as building blocks.
Export markets, reflecting the company’s international customer base.

Global Presence and Market Position

Longsheng describes itself as a multinational enterprise group, with manufacturing, sales, and agency networks extending across major global dye markets. Company information states that it has more than 30 sales entities, serves about 7,000 customers, maintains agency relationships in 50 countries, and operates 17 factories in 12 countries through its international business structure.

Market profiles and company disclosures show that the group is headquartered in Shaoxing, with additional bases and offices in Zhejiang and other locations in China, as well as internationally. Reuters and other market sources identify Longsheng as a company mainly engaged in textile chemicals and intermediates, with products sold domestically and abroad.

Industry estimates and company statements place Longsheng among the more influential players in the global dye market, especially following its control of DyStar; however, exact market-share figures should be treated as company-reported rather than independently verified, even when cited in corporate materials.

Sustainability and Environmental Initiatives

Longsheng positions part of its chemical portfolio as eco-friendly, especially in relation to dyes and textile auxiliaries. In the specialty chemicals sector, this typically implies attention to product performance, lower-impact formulations, and manufacturing efficiency, although the precise environmental performance of individual products depends on end-use, process conditions, and customer compliance requirements.

As a chemical manufacturer operating at scale, the company is subject to the same broader industry pressures affecting the global dye and specialty-chemicals sector: tighter environmental regulation, wastewater treatment requirements, emissions control, and customer demand for more sustainable formulations. The company’s public materials reviewed here do not provide enough detail to quantify its emissions reductions or resource-efficiency performance, so any such assessment would require the latest annual report and sustainability disclosures.

Financial Performance and Economic Impact

Public market data indicate that Zhejiang Longsheng is a large listed industrial company with multi-billion-yuan revenue and thousands of employees. Recent market profiles report revenue in the low- to mid-tens of billions of yuan and an employee base of roughly 5,000–6,000, depending on the source and reporting date.

The company contributes economically through:

Manufacturing employment in Zhejiang and other operating regions.
Export sales and foreign market participation.
Upstream chemical demand, supporting suppliers of raw materials, equipment, logistics, and industrial services.
Downstream supply to textile and industrial customers, particularly in dyeing and specialty chemical applications.

Company news also states that Longsheng was ranked 387th in the 2026 China private enterprise list and 281st among China’s private manufacturing enterprises, indicating continued recognition within domestic industry rankings.

Leadership and Corporate Governance

Public profiles identify Ruan Weixiang as chairman and Weixiang Ruan as chief executive in some market databases, reflecting transliteration variations across sources. The company is publicly listed, with standard disclosure obligations through the Shanghai Stock Exchange and corporate reporting channels.

Corporate governance information available in the sources reviewed here is limited, but the company’s long-standing listing status, investor-relations function, and periodic reporting indicate an established governance structure for a large Chinese industrial group.

Innovations and Future Outlook

Longsheng’s future prospects are closely tied to several industry trends:

Textile supply-chain restructuring, which affects demand for dyes, auxiliaries, and application support.
Environmental compliance and product reformulation, especially in dye manufacturing and chemical intermediates.
International competition in specialty chemicals, where scale, technical service, and global logistics matter.
Portfolio diversification, including inorganic chemicals, auto parts, and financial investment activities that may help balance cyclicality in the chemical business.

The company’s research platforms suggest continued emphasis on process innovation, application development, and industrial scale-up. Its next phase will likely depend on how effectively it balances mature dye businesses with higher-value chemical intermediates and regulatory expectations across China and overseas markets.

Summary

Zhejiang Longsheng Group is a major Chinese specialty chemicals company whose core identity is rooted in dyes, intermediates, and textile chemicals, supported by a broader industrial portfolio that includes inorganic chemicals, auto parts, real estate, and financial investment. Its combination of domestic manufacturing depth, international sales reach, and control of DyStar has made it a notable participant in the global dyestuff and textile-chemicals industry.

References

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CPS+ eMarketplace. (n.d.). ZHEJIANG LONGSHENG GROUP CO., LTDZHEJIANG LONGSHENG GROUP CO., LTD. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1018794Link