Our History
Dayang Chem (Hangzhou) Co., Ltd (formerly Hangzhou Dayangchem Co., Ltd), founded in 2000 and headquartered in Hangzhou, China, is a leading manufacturer of fine chemicals and specialty intermediates for the pharmaceutical, agrochemical, and advanced materials industries.
Our ISO 9001:2015 and ISO 14001-certified production facility ensures consistent quality, process reliability, and sustainable manufacturing - meeting the stringent requirements of global regulatory markets.
As a trusted partner, we also offer end-to-end solutions from custom synthesis and process development to multi-ton scale production. Our capabilities include:
- Route design & optimization.
- Kilolab and pilot-scale development.
- R&D team with 15+ experienced organic chemists.
- Full regulatory documentation: REACH, SDS, COA support
- Partner with Dayang Chem (Hangzhou) Co., Ltd – Your Trusted Chemical Solutions Provider Since 2000.
Our Factory
Our laboratory
Two laboratories in Zhejiang University and Zhejiang Industry University . We offer end-to-end contract development and manufacturing services - from route scouting and process optimization to multi-ton production. Our expertise spans catalytic hydrogenation, asymmetric synthesis, fluorination, and organometallic reactions.
Manufacturing base
The company has Manufacturing bases in Zhejiang, Jiangsu and Shandong province. We operate multiple production workshops equipped with glass-lined reactors, hydrogenation systems, and cryogenic capabilities, supporting scalable synthesis from pilot scale (kg) to multi-ton annual capacity. Our plant is certified to ISO 9001:2015 and ISO 14001.
Every batch undergoes rigorous quality control using advanced instrumentation, including HPLC, GC-MS ,ensuring consistent purity and compliance with international standards.
Backed by a skilled team of chemists and engineers, our factory delivers reliable, traceable, and scalable chemical manufacturing for global partners.
Dayang chem core production lines focus on:
- Pharmaceutical Intermediates
- Agrochemical Building Blocks
- Additives & Functional Monomers
- Custom Synthesis (CDMO/Toll Manufacturing)
Product Application
- Synthesis of pyrethroids, neonicotinoids, and triazole derivatives.
- Halogenated and heterocyclic compounds for active ingredient development .
- Nitrogen-containing heterocycles (e.g., pyridines, imidazoles).
- Protected amino acids and chiral synthons.
- Functionalized aliphatic and aromatic intermediates for cardiovascular, antiviral, and CNS drugs.
- Monomers for engineering plastics and composites.
- Additives for flame retardancy and thermal stability.
- Precursors for electronic chemicals and OLED materials.
Our Certificate
ISO14001
ISO9001
Dayang chem has passed ISO9001 international quality system certification for 14 consecutive years, and ISO14001 environmental management system certification in 2024 .
EcoVadis
Sustainability：Dayang chem has been awarded a Gold rating by EcoVadis in the third consecutive year, putting us in the top 5% of companies for the sustainability in our sector.
Production Equipment
Production Market
In the past 25 years, Dayang's products have been exported to 100 countries and regions around the world.
Key Regional Markets & Sales Performance:
- Europe – We serve customers in Germany, Switzerland, France, Italy, and the UK, primarily in the pharmaceutical and agrochemical sectors. 80% of European sales are for pharmaceutical intermediates used in API synthesis. Achieved 30% CAGR (2022–2024) in Western Europe.
- North America- We supply chemical intermediates to U.S. and Canadian partners, including CDMOs, specialty chemical distributors, and formulation labs.
- Asia-Pacific- Strong market presence in India, South Korea, Japan, and Southeast Asia, where demand for cost-effective, high-quality intermediates is rising.
- 60% of APAC sales are for generic drug intermediates and crop protection chemicals.
- Export volume grew by 45% in 2022-2024, driven by demand for fluorinated and nitrogen-containing compounds.
