Manufacturer VerifiedChina

Zhejiang Longsheng Group Co., Ltd.

Lonsen (DyStar)

Zhejiang Longsheng Group Co., Ltd. is the world's largest dye and chemical intermediate manufacturer, founded in 1970 and headquartered in Shaoxing, Zhejiang, China. With annual revenue of CNY 13.313 billion (~$1.85 billion, FY2025) and a net profit of CNY 2.118 billion, the company dominates global disperse dye production through its complete vertical integration from upstream intermediates (m-phenylenediamine, resorcinol) to finished dye products. The company acquired the global dye giant DyStar, extending its sales network across major textile-producing countries, and employs 5,322 people. Listed on the Shanghai Stock Exchange (SHA: 600352), Longsheng's core competency lies in its unmatched scale in dyes and colorants manufacturing.

Strengths: Longsheng's vertically integrated production chain from basic intermediates to finished dyes gives it unparalleled cost control, with proprietary access to m-phenylenediamine and resorcinol—key intermediates that competitors must purchase at market prices. The company's acquisition of DyStar brought a global distribution network spanning all major textile manufacturing hubs, including Bangladesh, Vietnam, Turkey, and Brazil, securing direct access to downstream customers. Longsheng's dye segment alone generated CNY 7.278 billion in revenue with industry-leading gross margins, reflecting its pricing power in disperse and reactive dyes where it holds 30%+ global market share. The company's manufacturing base in Shangyu, Zhejiang, is the single largest dye production complex in the world, with annual capacity measured in hundreds of thousands of tonnes.
Weaknesses: Longsheng's non-core real estate development business experienced a catastrophic 67.23% revenue decline in FY2025, dragging total revenue down 16.18% year-over-year and creating significant earnings volatility unrelated to its core dye operations. The company remains heavily exposed to tightening environmental regulations in China, as dye manufacturing generates substantial wastewater that requires costly treatment infrastructure and poses ongoing compliance risks. Longsheng's limited product diversification beyond dyes and intermediates creates concentration risk, as any cyclical downturn in global textile demand directly impacts its primary revenue stream without complementary business segments to offset the decline.

Business Nature

Zhejiang Longsheng Group Co., Ltd. is the world's preeminent vertically integrated dye and chemical intermediate manufacturer, listed on the Shanghai Stock Exchange SHA: 600352. Headquartered in Shangyu, Shaoxing, Zhejiang Province, the company operates the single largest dye production complex globally, with manufacturing facilities spanning upstream intermediates m-phenylenediamine, resorcinol, H-acid through downstream disperse, reactive, and acid dyes. Through its strategic acquisition of the legacy German dye conglomerate DyStar, Longsheng commands unmatched distribution and technical service networks across all major textile manufacturing economies. The company's manufacturing philosophy centers on total vertical integration—controlling every step from basic petrochemical feedstocks to finished colorant formulations—which delivers enduring cost advantages and supply chain security that competitors cannot replicate.

Core Business Areas

• Disperse Dyes: World's largest producer with hundreds of thousands of tonnes annual capacity, serving polyester textile dyeing across Asia, Europe, and the Americas
• Reactive Dyes: Comprehensive portfolio for cotton and cellulosic fiber dyeing, manufactured at scale with proprietary intermediate synthesis
• Dye Intermediates: Global leader in m-phenylenediamine, resorcinol, and H-acid production—critical upstream chemicals that supply both internal needs and external customers
• Acid Dyes & Leather Chemicals: Specialty colorants for wool, silk, nylon, and leather processing applications through DyStar's R&D pipeline
• Textile Auxiliaries: Complementary chemical agents for pre-treatment, dyeing, and finishing processes that enhance dye performance and fabric quality
• Paper Dyes & Specialty Colorants: Industrial-grade colorants for paper manufacturing, ink production, and non-textile applications
• Pigment Dispersions: High-performance pigment preparations for digital textile printing, packaging inks, and industrial coatings
• Environmental Technology: Advanced wastewater treatment and resource recovery systems for dye manufacturing facilities, also licensed to third-party chemical plants

Industry Rankings

8Top 10 Coatings and Dyeing Materials Manufacturers & Suppliers

Mfr

Corporate Report

Manufacturing Scale & Vertical Integration

Zhejiang Longsheng operates the world's largest disperse dye manufacturing complex, with integrated production lines spanning from upstream petrochemical intermediates to finished dye formulations. The company's Shangyu facility alone processes hundreds of thousands of tonnes of dye products annually, supported by captive production of critical intermediates including m-phenylenediamine and resorcinol—key building blocks that competitors must source externally at premium prices. This vertical integration creates an insurmountable cost moat: Longsheng controls feedstock costs, quality, and availability across the entire value chain. The acquisition of DyStar added manufacturing sites in Germany, Indonesia, and Brazil, further diversifying the company's global production footprint. With 5,322 employees dedicated primarily to dye and intermediate production, Longsheng's manufacturing density—revenue per manufacturing employee—ranks among the highest in the global chemical industry.

Global Market Position & DyStar Integration

Through its subsidiary DyStar, Longsheng commands approximately 30% of the global disperse dye market and maintains the industry's most extensive technical service and distribution network across 50+ countries. The DyStar brand carries 150+ years of German dye chemistry heritage, providing Longsheng with instant credibility and customer relationships in premium markets that Chinese manufacturers traditionally struggle to penetrate. In FY2025, the company's core dye segment generated CNY 11.218 billion in revenue (CNY 7.278 billion from pure dyes + CNY 2.864 billion from intermediates), maintaining industry-leading gross margins despite global textile market volatility. Net profit of CNY 2.118 billion demonstrates the pricing power and operational efficiency inherent in Longsheng's integrated model.

Sustainability & Compliance Profile

As the world's largest dye manufacturer, Longsheng faces intense scrutiny on environmental performance. The company has invested heavily in advanced wastewater treatment facilities at its Shangyu complex, implementing membrane filtration, MVR evaporation, and biological treatment systems to meet China's increasingly stringent discharge standards. However, dye manufacturing remains a fundamentally water-intensive and chemically complex process, and Longsheng's environmental compliance record has faced periodic regulatory attention. The company has begun developing bio-based dyes and low-impact synthetic routes, though these initiatives remain at an early stage compared to its massive conventional production base. Looking forward, Longsheng's ability to decarbonize its manufacturing operations and reduce water consumption will be critical to maintaining its license to operate in an era of tightening global environmental standards.

VerityRank Score: 87/100

VerityRank Score

87/ 100

Based on market presence, financial scale, operational capacity, and brand strength.

Quick Facts

Headquarters

Shangyu, Shaoxing, Zhejiang, China

Founded

1970

Employees

5,322

Revenue

CNY 13.313 billion (~$1.85 billion, FY2025)

Factories

Worlds largest disperse dye manufacturing complex in Shangyu, Zhejiang; multiple production bases for intermediates

Data Sources & Methodology

This corporate profile is compiled from publicly available sources including company annual reports, SEC/regulatory filings, official press releases, and verified third-party industry databases. Financial figures reflect the most recent fiscal year disclosures and are cross-validated across multiple independent references.

VerityRank Score is calculated using a proprietary multi-dimensional model evaluating market presence, financial strength, operational scale, innovation capacity, and brand influence. Individual dimension scores are normalized against industry peers and updated quarterly.

Disclaimer: This profile is for informational purposes only. VerityRank makes no warranties regarding completeness or timeliness. This content does not constitute investment advice or endorsement.

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