| Select | | 360° Test Labs | Test Lab | 4 Executive Plaza | Yonkers | New York | USA |
| Select | | 3M Company (Filtrete) | Test Lab | 3M Center | Maplewood | Minnesota | USA |
| Select | | AAF Flanders KY | Test Lab | 9920 Corporate Campus Drive, Suite 2200 | Louisville | Kentucky | USA |
| Select | | ABB Electrification Canada Inc. | Test Lab | 1811 Hymus Blvd. | Dorval | QC | Canada |
| Select | | ABB Motors and Mechanical Inc. | Test Lab | 5711 R.S. Boreham Jr. St. | Fort Smith | Arkansas | USA |
| Select | | Acuity Brands Lighting | Test Lab | 1 Acuity Way | Decatur | Georgia | USA |
| Select | | adamant technical services inc | Test Lab | 26851 miles rd | cleveland | Ohio | USA |
| Select | | Air Cool Industrial Co., Ltd. | Test Lab | Chen Jiang Administrative District, Bai Yun Shan, Luo-Qun Village | Chen Jiang, HuiZhou | Guangdong | China |
| Select | | AirPro Fan & Blower Company | Test Lab | 425 W Davenport St | RHINELANDER | Wisconsin | USA |
| Select | | AirScape, Inc. | Test Lab | 625 Charles Way | Medford | Oregon | USA |
| Select | | Alliance Laundry Systems LLC | Test Lab | Shepard Street P.O. Box 990 | Ripon | Wisconsin | USA |
| Select | | Alto-Shaam Inc | Test Lab | W164 N9221 Water St | Menomonee Falls | Wisconsin | USA |
| Select | | Ametek Prestolite Power | Test Lab | 875 Dearborn Drive | Columbus | Ohio | USA |
| Select | | Anhui Lanjie Intelligent Home Appliance Co.,LTD | Test Lab | No.26,Laifu Road,Xinqiao International Industrial | Huainan | Anhui | China |
| Select | | Ansett Lab Co., Ltd | Test Lab | 4F.,No.16,Aly.8,Ln.45,Baoxing Rd.,Xindian Dist. | New Taipei City | Taiwan | Taiwan |
| Select | | AnTek Certification, Inc. | Test Lab | 7F., No 351, Yangguang St. | Neihu District | Taipei | Taiwan |
| Select | | Apple, Inc. | Test Lab | One Apple Park Way | Cupertino | California | USA |
| Select | | Aquasana | Test Lab | 6310 Midway Rd | Haltom City | Texas | USA |
| Select | | ARCELIK A.S. | Test Lab | Karaagaç Cad. No:2-6 Sütlüce Beyoglu | Istanbul | Istanbul | Turkey |
| Select | | Architectural Testing, Inc. (An Intertek Company) | Test Lab | 130 Derry Court | York | Pennsylvania | USA |
| Select | | Asia Vital Components(Dongguan) Co., Ltd. | Test Lab | Golden Lake Industrial District, Qishi Town | Dongguan City | Guangdong Province | China |
| Select | | Assa Abloy Americas Residential (Pfister) Xiamen Laboratory | Test Lab | No. 46 Hai Jing Zhong Road, FTZ | Xiamen | Fujian | China |
| Select | | Atlas Homegoods | Test Lab | 2108 N ST,STE N SACRAMENTO,CA 95816 | SACRAMENTO | California | USA |
| Select | | Attestation of Global Compliance (Shenzhen) Co., Ltd. | Test Lab | 1-2/F, Building 19, Junfeng Industrial Park, Chong | Shenzhen | Guangdong | China |
| Select | | Audix Technology (Shanghai) Co., Ltd. | Test Lab | 3F 34 Bldg., No. 680 Guiping Rd. | Caohejing Hi-Tech Park | Shanghai | China |
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