2. CQM Certification Group Co., Ltd
3. NanyangExplosion proof electricalResearch Institute Limited (CNEX)
4. Shanghai Instrument and Control System Inspection and Testing Institute Co., Ltd. (NEPSI)
6. Zhongchuang Xinhai (Tianjin) Certification Services Co., Ltd. (PCEC)
There are also over a dozen laboratories (continuously updated):
Suzhou Electric Appliance Science Research Institute Co., Ltd
National Quality Supervision and Inspection Center for Low Voltage Explosion proof Electrical Appliances (Liaoning)
Low voltage in the mechanical industryExplosion proof electrical productsQuality Supervision and Testing Center
Shanghai Instrument and Control System Inspection and Testing Institute Co., Ltd
National Quality Supervision and Inspection Center for Explosion proof Electrical Products
National Quality Supervision and Inspection Center for Explosion proof Products (Tianjin)
National Coal Mine Explosion proof Safety Product Quality Supervision and Inspection Center
National Nonferrous Metallurgical Mechanical and Electrical Product Quality Supervision and Inspection Center
Quality Supervision and Testing Center for Explosion proof Electrical Equipment in the Mechanical Industry
National Coal Mine Dust Prevention and Ventilation Safety Product Quality Supervision and Inspection Center
ShanghaiCoal ScienceTesting Technology Co., Ltd
National Coal Mine Support Equipment Quality Supervision and Inspection Center
National Safety Production Changzhou Mining Communication Monitoring Equipment Testing and Inspection Center
National Quality Supervision and Inspection Center for Explosion proof Equipment (Guangdong)
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