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| Envirco Corporation | |
| Modular Cleanrooms, Inc. / Rocky Mountain Air, Inc | ||
| Carlisle Bay Co. Ltd. | ||
| Asahi Kasei America Inc. | ||
| Particle Measuring Systems | ||
| Worklon Division of Superior Uniform Group, Inc. | ||
| Lasco Services Inc. | ||
| LIBERTY INDUSTRIES, INC. | ||
| P.U. Glove (M) Sdn. Bhd. | ||
| Clean Air Technology, Inc. 41105 Capital - Canton, MI 48187 USA - - | ||
| Servicor | ||
| MSS Clean Technocogy | ||
| Cintas Cleanroom Resources | ||
| Veltek Associates Inc. | ||
| Cleanroom Garments | ||
| PennWell Corporation / pennNET | ||
| Berkshire Corporation | ||
| Cleanrooms West 2003 - - - | ||
| Lym Tech Scientific | ||
| Cleanrooms East - - - | ||
| HEPA Corporation | ||
| Allfun Enterprise co., Ltd. | ||
| Dycem | ||
| ALMA Inc. Advanced Laminated Material Applications, Inc. | ||
| JNJ Industries | ||
| Texwipe | ||
| Speedfam | ||
| Markel Industries | ||
| The Softwall Shop Division of Pacific Environmental Technologies, Inc. | ||
| Clean Rooms International | ||
| Perotech Sciences Inc | ||
| Atmos Tech Industries | ||
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