| BECKMANN CHEMIKALIEN KG | +49-42 41/93 08-0 | The Netherlands |
| BIOTREND Chemicals AG | +41 44 805 76 76 | Germany |
| TimTec Corporation | 302-292-8500 | United States |
| BIBRA Information Services Ltd | +44 (0)20 8722 4701 | Germany |
| Brunschwig chemie | +31 (0)20 611 31 33 | The Netherlands |
| Yuyao City Hongyun Rubber Materials Plant | 086-0512-58770206 | China |
| Jintan City Fraternal Fine Chemical Factory (Jintan Braun Catalyst Plant) | +86-519-82553398 82553818 | China |
| Fujian Hua Min Import & Export Corporation | 86(592) 5817016 | China |
| SINOPEC Beijing Research Institute of Chemical Industry | 86-010-64211993 | China |
| Bio-Lab | 010-51292623 | China |
| BIOTREND GmbH | +49-221-9498320 | Germany |
| BISCO, Inc. | +800 247 3368 | United States |
| Bornnet Corporation Co.,Ltd. | +66 2934 1826-9 | Thailand |
| Beijing Boaosen Biotechnology Ltd. | 010-56495215 56495216 | China |
| SHANGHAI BANGCHENG CHEMICAL Co.,Ltd. | 021-69106960 13701823733 | China |
| Wujiang Zhenxing Biological Product Co. | 0512-63328099 | China |
| Tianjin Bestgain Science&Technology Co.,Ltd. | 022-83280517 | China |
| Beijing Beihai Liuhuan Sci-tech Development Co., Ltd. | +86-10-62495496 | China |