| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| Beijing Pure Chem. Co., Ltd. | +86 10 83993285, 83993281 | +86 10 63370219 | P.R.China | REQUEST |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-571-88938639 | +86-571-8893-8652 | P.R.China | REQUEST |
| Evonik ( formerly Wilshire Technologies, Inc. ) | +1-609-683-1017 | +1-732-274-0149 | USA | REQUEST |
| H&Z Industry Co.,Ltd | +86 13583185792 | +86 531 88905468 | P.R.China | REQUEST |
| Leap Chem Co., Ltd | +852-30606658 | P.R.China | REQUEST | |
| Nantong Xindao Biotech Ltd | +86 19033786557 | P.R.China | REQUEST |