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China produces over 90% of the world's ZDBC (Zinc Dibutyl Dithiocarbamate). This guide ranks the top 10 Chinese ZDBC manufacturers for 2026, based on production capacity, quality certifications, export experience, and customer reputation.
Quick Overview
Rank
Manufacturer
Location
Est. Annual Capacity
Key Strengths
1
Rayway Chemical
Qingdao, Shandong
5,000+ MT
ISO 9001, REACH, SGS, export-focused
2
Rhein Chemie (Lanxess)
Qingdao, Shandong
8,000+ MT
German technology, global brand
3
Northeast Auxiliary Chemical
Shenyang, Liaoning
4,000+ MT
State-owned heritage, long history
4
Kemai Chemical
Danyang, Jiangsu
3,500+ MT
Consistent quality, competitive pricing
5
Hengxing Chemical
Pingdu, Shandong
3,000+ MT
Cost-effective, bulk production
6
Sinochem (China Sunsine)
Heze, Shandong
15,000+ MT
Largest overall capacity
7
Puyang Willing Chemicals
Puyang, Henan
2,500+ MT
Specialized in rubber accelerators
8
Jixiang Chemical
Weifang, Shandong
2,000+ MT
Long-standing reputation
9
Xinji Chemical
Tianjin
2,000+ MT
Export-oriented, flexible MOQ
10
Huanyu Chemical
Zibo, Shandong
1,500+ MT
Regional supplier, fast delivery
1. Rayway Chemical
Location: Qingdao, Shandong Province Founded: 2006 (industry experience since 1993) Est. Annual ZDBC Capacity: 5,000+ MT Website:raywaychem.com
Rayway Chemical is a family-owned enterprise with over 21 years of experience in the rubber chemical industry. Based in the port city of Qingdao, they offer strong export logistics and competitive pricing.
Key Certifications: ISO 9001, REACH (EU), SGS testing available Product Range: ZDBC powder, granules, oil-treated grades Export Markets: Europe, Southeast Asia, Middle East, Americas, Africa Notable Advantage: Technical support from experienced rubber chemists; flexible packaging options (20 kg bags to 1000 kg FIBCs)
✅ Best for: International buyers seeking a reliable, experienced supplier with strong technical support and flexible MOQ.
2. Rhein Chemie (Lanxess) - Qingdao
Location: Qingdao, Shandong Province Est. Annual ZDBC Capacity: 8,000+ MT
A subsidiary of the German Lanxess group, Rhein Chemie Qingdao brings German engineering and quality standards to Chinese manufacturing. They serve primarily tier-1 tire companies and multinational rubber goods manufacturers.
Key Certifications: ISO 9001, ISO 14001, IATF 16949 Product Range: Premium-grade ZDBC for tire and automotive applications Export Markets: Global (tier-1 automotive and tire clients)
✅ Best for: Large-scale buyers requiring automotive-grade certifications and global brand assurance.
3. Northeast Auxiliary Chemical Industry
Location: Shenyang, Liaoning Province Est. Annual ZDBC Capacity: 4,000+ MT
One of the oldest rubber chemical producers in China, established in the state-owned chemical industrial era. They have a strong domestic customer base and are expanding export operations.
Key Certifications: ISO 9001 Export Markets: Russia, Central Asia, Eastern Europe
✅ Best for: Buyers in Russia/CIS markets or those seeking a manufacturer with a long operational history.
4. Kemai Chemical
Location: Danyang, Jiangsu Province Est. Annual ZDBC Capacity: 3,500+ MT
A medium-sized but well-regarded producer known for consistent product quality and competitive pricing. Strong in the Southeast Asian market.
Key Certifications: ISO 9001 Export Markets: Southeast Asia, India, South America
✅ Best for: Mid-sized buyers seeking a balance of quality and price.
5. Hengxing Chemical
Location: Pingdu, Shandong Province Est. Annual ZDBC Capacity: 3,000+ MT
A cost-effective producer focused on bulk production of standard-grade ZDBC. Suitable for buyers where price sensitivity is the primary factor.
Key Certifications: ISO 9001 Export Markets: Middle East, Africa, South Asia
✅ Best for: Price-sensitive bulk buyers with less stringent quality requirements.
6. Sinochem (China Sunsine)
Location: Heze, Shandong Province Est. Annual ZDBC Capacity: 15,000+ MT (across all accelerators)
China Sunsine is the largest rubber accelerator manufacturer in the world by total capacity. Part of the Sinochem group, they offer massive production scale and a comprehensive product portfolio.
Key Certifications: ISO 9001, ISO 14001, OHSAS 18001 Product Range: Full range of accelerators including ZDBC Export Markets: Global (listed company on Singapore Stock Exchange)
✅ Best for: Very large-volume buyers needing a single-source supplier for multiple accelerator types.
7. Puyang Willing Chemicals
Location: Puyang, Henan Province Est. Annual ZDBC Capacity: 2,500+ MT
A specialized rubber chemical producer focusing on dithiocarbamate and thiuram accelerators. Known for responsive customer service.
Key Certifications: ISO 9001 Export Markets: Europe, Southeast Asia, South America
✅ Best for: Buyers who value responsive communication and flexible service.
8. Jixiang Chemical
Location: Weifang, Shandong Province Est. Annual ZDBC Capacity: 2,000+ MT
A long-standing chemical manufacturer with a solid domestic reputation. Gradual export expansion in recent years.
Key Certifications: ISO 9001 Export Markets: Southeast Asia, East Asia
✅ Best for: Regional buyers and smaller-volume orders.
9. Xinji Chemical
Location: Tianjin (port city) Est. Annual ZDBC Capacity: 2,000+ MT
Located in the Tianjin port area, offering logistical advantages for export. Known for flexible MOQ and good communication.
Key Certifications: ISO 9001 Export Markets: Middle East, Africa, Europe
✅ Best for: Smaller-volume buyers and those new to importing from China (flexible MOQ).
10. Huanyu Chemical
Location: Zibo, Shandong Province Est. Annual ZDBC Capacity: 1,500+ MT
A regional supplier in the Shandong chemical industrial cluster. Known for fast domestic delivery and competitive regional pricing.
Key Certifications: ISO 9001 Export Markets: Limited export; mainly domestic
✅ Best for: Buyers within China or neighboring countries.
Figure 2: Estimated ZDBC Market Share in China (2025-2026)
How to Choose the Right ZDBC Supplier
Key Selection Criteria
Factor
What to Look For
Why It Matters
Quality certifications
ISO 9001 minimum; REACH if exporting to EU
Regulatory compliance, product consistency
Purity level
≥ 97% by HPLC
Higher purity = better vulcanization performance
Moisture content
≤ 0.5%
Affects storage stability and compound consistency
Particle form
Powder vs granules vs oil-treated
Depends on your mixing process and dust concerns
Packaging
20 kg bags, big bags, drums
Must match your handling equipment
Logistics
FOB port, CIF terms
Port proximity affects shipping costs
MOQ
Minimum order quantity
Especially important for trial orders
Technical support
Chemical expertise available
Helps with formulation and troubleshooting
Verification Steps Before Ordering
Request a free sample — Most reputable suppliers offer samples for qualified buyers
Request SDS and TDS — Safety data sheet and technical data sheet
Request SGS or third-party testing — Independent verification of quality claims
Check customer references — Ask for export records or testimonials
Verify certifications — ISO 9001 certificate should have current validity date
ZDBC Quality Checklist
When evaluating ZDBC from any manufacturer, verify these specifications:
Parameter
Acceptable Range
Ideal Value
Purity (HPLC)
≥ 95%
≥ 97%
Zinc content
13.0–14.5%
13.5–14.0%
Melting point
104–110°C
106–108°C
Moisture
≤ 0.5%
≤ 0.3%
Ash content
≤ 0.5%
≤ 0.3%
Appearance
White to cream powder
Consistent color, no lumps
Odor
Slight amine odor
Not strong or pungent
Why Chinese ZDBC Dominates Global Supply
Advantages of Sourcing ZDBC from China
Cost advantage: Chinese ZDBC is typically 20–40% cheaper than Western-produced equivalents
Scale: 90%+ of global ZDBC production is in China, primarily in Shandong Province
Supply chain: Integrated raw material supply (dibutylamine, carbon disulfide, zinc)
Logistics: Major ports (Qingdao, Tianjin, Shanghai) serve global shipping routes
Quality improvement: Chinese manufacturers have invested heavily in quality control and certifications in recent years
Potential Risks & How to Mitigate
Risk
Mitigation
Inconsistent quality
Request SGS testing; start with trial order
Communication barriers
Choose suppliers with export experience and English-speaking staff
Regulatory compliance
Verify REACH, TSCA, or other relevant certifications
Payment security
Use letter of credit (L/C) for first orders
Frequently Asked Questions
How much ZDBC does China produce annually?
Estimated 30,000–40,000 MT per year, with over 90% global market share.
What is the lead time for ZDBC orders from China?
Typically 2–4 weeks from order confirmation, depending on quantity and production schedule.
Do Chinese ZDBC manufacturers provide free samples?
Most reputable manufacturers, including Rayway Chemical, provide free samples for qualified buyers.
Is Chinese ZDBC REACH compliant?
Many Chinese manufacturers offer REACH-registered ZDBC for EU import. Always verify the current registration status before ordering.
What is the minimum order quantity for ZDBC from China?
MOQ varies: typically 100–500 kg for trial orders, 5–20 MT for container orders, or 1 pallet (800 kg) for LCL shipping.
Last updated: May 2026. Rankings are based on publicly available information, industry reputation, and production capacity estimates. Manufacturers listed are legitimate companies with verifiable operations.
ZDBC Rubber Accelerator: The Complete 2026 Guide to Zinc Dibutyl Dithiocarbamate ZDBC (Zinc Dibutyl Dithiocarbamate) is a fast-curing rubber accelerator in the dithiocarbamate family, widely
