Rubber Accelerator Manufacturers in China: Key Suppliers Overview
China produces over 85% of the world's rubber accelerators. This guide covers the major rubber accelerator manufacturers in China, explains the different accelerator types, and provides practical sourcing advice for international buyers looking to purchase CBS, MBTS, ZDEC, TBBS, TMTD, DPG, and other accelerator products.
Market Overview
Rubber accelerators are essential chemicals in the vulcanization process — they speed up the cross-linking of rubber molecules with sulfur, determining both production efficiency and final product quality. China's dominance in accelerator production comes from:
- Integrated raw material supply — Aniline, carbon disulfide, amines, and zinc all produced domestically
- Large-scale manufacturing — Multiple producers with 10,000+ MT annual capacity
- Port infrastructure — Qingdao, Shanghai, Tianjin serve global shipping routes
- Cost advantage — 20–40% cheaper than Western-produced equivalents
Estimated annual production: 200,000–250,000 MT (all accelerator types combined)
China's share of global production: ~85%
Accelerator Types & Selection Guide
Main Accelerator Families
| Type | Examples | Cure Speed | Primary Application | Global Volume Share |
|---|---|---|---|---|
| Sulfenamides | CBS, TBBS, DCBS | Fast | Tire manufacturing | ~40% |
| Thiazoles | MBTS, MBT, ZMBT | Semi-ultra | General rubber goods | ~20% |
| Dithiocarbamates | ZDEC, ZDBC | Ultra-fast | Latex + industrial | ~15% |
| Thiurams | TMTD, TETD, TBzTD | Ultra-fast | Accelerator/booster | ~10% |
| Guanidines | DPG | Slow | Secondary accelerator | ~10% |
| Others | HTS, etc. | Varies | Specialized | ~5% |
How to Choose the Right Accelerator
| Application | Primary Accelerator | Secondary Accelerator | Reason |
|---|---|---|---|
| Passenger tire tread | CBS (0.8–1.5 phr) | DPG (0.2–0.4 phr) | Best scorch safety + cure rate |
| Truck tire tread | TBBS or CBS (0.8–1.2 phr) | — | Higher heat resistance |
| Latex gloves | ZDEC (0.5–1.0 phr) | — | Low-temperature cure essential |
| Condoms | ZDEC (0.3–0.8 phr) | ZMBT (optional) | Thin uniform film required |
| Conveyor belts | CBS (0.6–1.2 phr) | TMTD (0.1–0.2 phr) | Good heat resistance + cure |
| Shoe soles | MBTS (0.8–1.5 phr) | DPG (0.3–0.5 phr) | Cost-effective system |
| Hoses & tubing | CBS (0.5–1.0 phr) | ZDEC (0.2–0.3 phr) | Balanced properties |
| Cable insulation | DCBS or CBS | — | Good electrical properties |
Key Rubber Accelerator Manufacturers
1. China Sunsine Chemical
- Location: Heze, Shandong Province
- Products: CBS, TBBS, DCBS, MBTS, TMTD, DPG, ZDEC, ZDBC (full accelerator range)
- Scale: The world's largest rubber accelerator manufacturer by total capacity
- Certifications: ISO 9001, ISO 14001, OHSAS 18001
- Listed: Singapore Stock Exchange
- Export: Global customer base
Sunsine is the dominant player in the Chinese accelerator industry, producing virtually every major accelerator type at massive scale. Their size means competitive pricing but can mean less flexibility for smaller buyers.
2. Kemai Chemical (Stabilizer)
- Location: Danyang, Jiangsu Province
- Products: CBS, MBTS, DPG, ZDEC, ZDBC
- Certifications: ISO 9001
Kemai is a well-regarded mid-sized producer known for consistent product quality. They have a strong presence in the Southeast Asian market and serve both tire and industrial rubber customers.
3. Willing Chemical (Puyang Willing Chemicals Co., Ltd.)
- Location: Puyang, Henan Province
- Products: CBS, MBTS, TMTD, ZDEC, ZDBC, DPG
- Certifications: ISO 9001
- Export: Established export operations
Willing Chemical produces a comprehensive range of accelerators and serves both domestic and international customers from their Henan manufacturing base.
4. Northeast Auxiliary Chemical Industry
- Location: Shenyang, Liaoning Province
- Products: MBTS, CBS, TMTD, DPG
- History: One of China's oldest rubber chemical manufacturers
- Export: Russia, Central Asia, Eastern Europe
Northeast Auxiliary Chemical has operated for decades and maintains a strong position in China's domestic accelerator market, particularly in the northern industrial regions.
5. Rayway Chemical
- Location: Qingdao, Shandong Province
- Experience: 21+ years in rubber chemicals
- Products: ZDEC, ZDBC, ZMBT, TMTD, TBzTD, CBS
- Certifications: ISO 9001, REACH (EU), SGS testing available
- Export: Europe, Southeast Asia, Middle East, Americas, Africa
- Website: raywaychem.com
Rayway Chemical specializes in dithiocarbamate and thiuram accelerators with a strong focus on export markets. Based in Qingdao port city, they offer flexible packaging, free samples, and technical support.
Accelerator Specification Comparison
CBS (N-Cyclohexyl-2-benzothiazole Sulfenamide)
| Parameter | Standard Grade | Premium Grade |
|---|---|---|
| Purity (HPLC) | ≥ 96% | ≥ 98% |
| Melting point | 95–102°C | 97–102°C |
| Moisture | ≤ 0.5% | ≤ 0.3% |
| Ash content | ≤ 0.3% | ≤ 0.2% |
| Appearance | White to gray powder | White powder |
MBTS (Dibenzothiazyl Disulfide)
| Parameter | Standard Grade | Premium Grade |
|---|---|---|
| Purity (HPLC) | ≥ 95% | ≥ 97% |
| Melting point | ≥ 160°C | ≥ 163°C |
| Moisture | ≤ 0.5% | ≤ 0.3% |
| Ash content | ≤ 0.5% | ≤ 0.3% |
ZDEC (Zinc Diethyl Dithiocarbamate)
| Parameter | Standard Grade | Premium Grade |
|---|---|---|
| Purity (HPLC) | ≥ 95% | ≥ 97% |
| Melting point | 174–180°C | 176–180°C |
| Moisture | ≤ 0.5% | ≤ 0.3% |
| Zinc content | 17.0–19.0% | 17.5–18.5% |
How to Choose an Accelerator Supplier
Key Evaluation Criteria
| Factor | What to Check |
|---|---|
| Product range | Can they supply multiple accelerators you need? Combined orders save shipping |
| Quality consistency | Request batch-to-batch test reports (COA) |
| Certifications | ISO 9001 minimum; REACH for EU export |
| Physical form | Powder, granules, oil-treated — must match your mixing process |
| Packaging | 20 kg bags, big bags, drums |
| Logistics | Port proximity affects shipping costs |
| MOQ flexibility | Trial orders vs. container quantities |
| Technical support | Formulation assistance available? |
Common Accelerator Combinations
Buyers often purchase these accelerators together in single orders:
| Combination | Typical Users |
|---|---|
| CBS + DPG | Tire manufacturers |
| ZDEC + ZMBT | Latex product manufacturers |
| MBTS + DPG | General rubber goods |
| CBS + TMTD | Industrial belts and hoses |
| ZDEC + ZDBC | Mixed latex and dry rubber production |
Typical Accelerator Pricing (2026 Estimate)
FOB China main ports. Contact suppliers for current pricing.
| Accelerator | Price Range (USD/kg) |
|---|---|
| CBS (powder) | $2.20–$3.50 |
| CBS (granules) | $2.50–$3.80 |
| MBTS (powder) | $1.80–$3.00 |
| MBTS (granules) | $2.00–$3.30 |
| TBBS | $2.80–$4.50 |
| DCBS | $3.50–$5.50 |
| ZDEC (powder) | $2.50–$3.80 |
| ZDBC | $3.00–$4.50 |
| TMTD | $1.50–$2.80 |
| DPG | $2.00–$3.50 |
Accelerator Market Trends (2025–2026)
- Sulfenamides remain dominant — CBS and TBBS continue to be the preferred accelerators for tire manufacturing
- Nitrosamine regulation impact — Thiuram accelerators (TMTD) facing increasing regulatory pressure in Europe
- Dithiocarbamate demand stable — Driven by steady medical glove demand
- Chinese capacity expansion — New production lines in Shandong and Henan
- Low-nitrosamine grades — Growing demand for safer alternatives in sensitive applications
Frequently Asked Questions
What is the largest rubber accelerator manufacturer in China?
China Sunsine Chemical is the world's largest rubber accelerator manufacturer by total capacity.
Can I order multiple accelerator types from one supplier?
Yes. Many Chinese manufacturers produce multiple accelerator families. Combined orders often get better pricing and save on shipping costs.
What is the minimum order quantity for Chinese accelerators?
MOQ varies by manufacturer and product. Typically 100–500 kg for trial orders, 1 pallet (approx. 800 kg) for LCL, or 15–18 MT for a full container.
Do Chinese accelerator suppliers provide free samples?
Most reputable suppliers provide free samples for qualified buyers. You typically pay for shipping.
How do I verify a supplier's quality?
Request a Certificate of Analysis (COA) from a recent production batch, and consider paying for SGS or other third-party testing on your first order.
Are Chinese-manufactured accelerators REACH compliant for the EU?
Many Chinese manufacturers offer REACH-registered accelerators for EU import, but you should verify the current registration status before ordering.
Accelerator Supply Summary
| Manufacturer | Location | Key Accelerators | Strengths |
|---|---|---|---|
| Sunsine Chemical | Heze, Shandong | All major types | Largest capacity, competitive pricing |
| Kemai Chemical | Danyang, Jiangsu | CBS, MBTS, DPG, ZDEC | Consistent quality, good export experience |
| Willing Chemical | Puyang, Henan | CBS, MBTS, TMTD, ZDEC | Full range, ISO 9001 |
| NE Aux. Chemical | Shenyang, Liaoning | MBTS, CBS, TMTD | Long history, strong domestic |
| Rayway Chemical | Qingdao, Shandong | ZDEC, ZDBC, ZMBT, TMTD, TBzTD, CBS | REACH, export-focused, technical support |
Where to Buy Rubber Accelerators
Rayway Chemical offers a range of rubber accelerators including ZDEC, ZDBC, ZMBT, TMTD, TBzTD, and CBS with ISO 9001 certification.
📧 Contact Rayway Chemical → for current pricing, free samples, and technical documentation.
Last updated: May 2026. This list is based on industry knowledge and is not exhaustive. Prices are indicative — contact individual suppliers for current information.
