supplier list
- Sigma-Aldrich Chemie GmbH
- Tel:800 558-9160
- Address: Industriestrasse 25CH-9471 Buchs SGSwitzerland
- Hangzhou Dayangchem Co., Ltd.
- Tel:86-571-88938639
- Address: 9/F Unit 2 ChangdiTorch Building, 259 #WenSan Road
- Boc Sciences
- Tel:1-631-5046093
- Address: 45-16 Ramsey Road, Shirley, NY 11967, USA