| Catalogue |
| Supplier | Country | Telephone |
| Nanjing Easthigh Measurement Co., Ltd | China | 025-87135597 |
| Channel Technology Group HK LTD | China | 0086-15611261324 |
| sixal inc | United States | 3102280069 |
| Channel Technology Group Ltd | China | 15611261324 |
| Icenta Controls Ltd | United Kingdom | 01722439880 |
| Channel Scientific Instruments Limited | China | 15611261324 |
| Hangzhou Laihe Biotech Co., Ltd | China | 0571-86658001-8008 |
| BIO-TECHNE CORPORATION | United States | 510-576-8800 |
| KHM TRADE LINK | Bangladesh | 1911022928 |
| BEIJING ES UNION TECHNOLOGY CO.,LTD | China | 15611261324 |
| Beijing Channel Scientific Instruments | China | 15611261324 |
| Olympus Europa SE & Co. KG | Germany | +49 (0) 40 23773 5913 |
| hero pharma | China | 2323233 |
| Ahmed Abass Trading | United Kingdom | +44998877665 |
| ME conference | United Kingdom | 44-2088190774 |
| meilu company | China | 13601481300 |
| CVDT 2018 | United Kingdom | +442039363178 |
| NANJING CHANNEL TECHNOLOGY | China | 15611261324 |
| RADICAL SCIENTIFIC EQUIPMENTS PVT. LTD. | India | +91-171-2600801, 2891500 |
| EndoGastric Solutions | United States | 4253079200 |