| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| AK Scientific, Inc. | +1 (510) 429-8835 | +1 (510) 429-8836 | USA | REQUEST |
| Molekula GmbH | +49 (0) 89 360 900 900 | +49 (0) 89 360 900 901 | Germany | REQUEST |
| Senzhuo Industry Co.,Ltd | +86-15165036020 | +86-88902568 | P.R.China | REQUEST |
| Sigma-Aldrich International GmbH | +41 81 755 28 28 | +41 81 755 28 15 | Switzerland | REQUEST |