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Verified Chinese chemistry & pharma-intermediate supply network

A verified supplier network across 5 industrial-cluster cities and 5 categories. Submit a CAS number or product name and ChemExact matches qualified suppliers and aggregates their quotes for you: 24h acknowledgement, 48–72h with three comparative quotes, per-batch COA. You deal with suppliers directly, with ChemExact providing precise matching and end-to-end information services that make sourcing faster and more transparent.

Request 3 comparative quotes See named partners (3)
Covered categories
SolventsAcids & corrosivesSurfactantsPigmentsPharma intermediates
24h
BD first response
72h
3 comparative quotes
5–10
Days, paid sample (1–5 kg)
5
Compliance frameworks · REACH · GHS · ISO 9001 · ISO 14001 · GMP (on request)

Signed flagship suppliers

Below are the flagship factories ChemExact has signed direct agreements with and shows publicly — their branded product pages render per-batch COA, SDS and spectra. For commercial confidentiality we do not list every facility our reverse-sourcing can reach; those suppliers stay in our verified network roster and are matched only when a buyer's RFQ hits.

Gold partner 3

Long-term contractual partner. ChemExact holds inspection rights on every shipment and publishes per-batch COA on the product page. Top of every buyer-search ranking.

Gold partner ✓ verified

T&W

上海遐瑞医药科技有限公司
📍 Shanghai, CN · Pharma Intermediates
Shanghai-based supplier of pharmaceutical intermediates and fine chemicals.…
Gold partner ✓ verified

Chemhigh

精化快车技术开发（濮阳）有限公司
📍 Puyang, CN · Fine Chemicals
Manufacturer and supplier of trifluoromethanesulfonate (triflate) salts, triflic acid / anhydride and specialty fine chemicals, based in Puyang, Henan.…
Gold partner ✓ verified

Shanghai Medfine Bio-pharmaceutical Co., Ltd.

上海迈德弗生物医药有限公司
📍 Shanghai, CN · Pharma Intermediates
Shanghai Medfine Bio-pharmaceutical Co., Ltd. was founded in April 2023. Located in the international city of Shanghai, it is a comprehensive supplier across ph…

A curated selection Listed here are the flagship suppliers under direct agreement with ChemExact. For commercial confidentiality, our other vetted, qualified suppliers are not published individually and are matched by ChemExact on request.

Buyers · submit a sourcing request for a tailored match and comparative quotes → Manufacturers · submit an application to join →

Targeted matching (no suitable supplier listed?)

Send us a CAS number or product name; within 48h we match three qualified suppliers from the verified network and aggregate their quotes for you to compare. You connect with suppliers directly — no registration, no NDA upload required.

  • China Customs (GACC) public exporter registry
  • ISO 9001 / 14001 public certificate directory
  • Stock-listed chemicals manufacturers (SHA/SZSE)
Send a CAS or product name Custom scope (CDMO / multi-SKU)

Are you a manufacturer?

Free supplier onboarding for verified Chinese chemical manufacturers — get a GEO-optimised listing, structured Schema.org markup and ChatGPT/Perplexity discoverability. Upgrade to Silver or Gold partner to unlock dedicated branded product pages with bilingual COA/SDS/spectra ingestion.

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