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| Koch Filter Corporation | |
| Huanian Activated Carbon Factory | ||
| Rainmaker Technologies | ||
| Fujian Snowblack Activated Carbon Co., Ltd | ||
| China Activated Carbon Ind. Ltd. | ||
| Norit Activated Carbon | ||
| TIGG Corporation | ||
| USFilter Westates Carbon | ||
| Carbon Activated Corp. | ||
| Aquaplant Equipments Pvt. Ltd. | ||
| Sino Canadian Liyang Zhuxi Activated Carbon Co. Ltd. | ||
| KD Technology Sdn Bhd | ||
| Breckland Water Treatment | ||
| General Filtration | ||
| Calgon Carbon Corporation | ||
| Arnar Tool & Manufacturing Company | ||
| Pure Pro Water Corporation | ||
| MHB Filtration GmbH | ||
| TIGG Corporation | ||
| Indo German Carbons Limited | ||
| ARCE Systems, Inc. | ||
| Bengbu Ocean Activated Carbon Factory | ||
| Waterlink Sutcliffe Carbons | ||
| Active Carbon Filters Ltd | ||
| Sirchie Finger Print Laboratories, Inc. | ||
| Schulz Lufttechnik GmBH Ste Fansbecke 45 - Sprockhovel, D-45549 Germany - - | ||
| FTM Representaciones Industriales Ltda Parque de la 93 - Carrera 11 A No. 93 A - 46, Oficina 301 - Bogotá, Colombia - | ||
| Winfield Industries, Inc. | ||
| PEP Process Efficiency Products | ||
| Emcel Filters Limited | ||
| ZUOYUN HONGTAI Environmental Protection Material 15#,West Yingbin Road - Da Tong, 037008 China - - chinahanyu@hotmail.com | ||
| Mindong Lianyi Group | ||
| Active Carbon India Limited | ||
| Dryden Aqua | ||
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