| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| AK Scientific, Inc. | +1 (510) 429-8835 | +1 (510) 429-8836 | USA | REQUEST |
| Alpha Biopharmaceuticals Co., Ltd. | +86-411-39042693 | +86-411-39042497 | P.R.China | REQUEST |
| ASM Research Chemicals | +49 511 5466 302 | +49 511 6005 2740 | Germany | REQUEST |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-571-88938639 | +86-571-8893-8652 | P.R.China | REQUEST |
| Shandong SanYoung Industry Co., Ltd | +86 155-64526813 | +86 531-56897532 | P.R.China | REQUEST |
| Shanghai Hanhong Scientific Co., Ltd. | +86 21 64762736 | +86 21 54291107 | P.R.China | REQUEST |