2. Fangyuan Logo Certification Group Co., Ltd. (CQM)
3. NanyangExplosion proof electricalResearch Institute Limited (CNEX)
4. Shanghai Instrumentation and Automation System Inspection and Testing Institute Co., Ltd. (NEPSI)
6. Zhongchuang Xinhai (Tianjin) Certification Services Co., Ltd. (PCEC)
There are also more than ten laboratories (continuously updated):
Suzhou Electric Science Research Institute Co., Ltd
National Quality Supervision and Inspection Center for Low Voltage Explosion proof Electrical Appliances (Liaoning)
Mechanical Industry Low VoltageExplosion proof electrical productsQuality Supervision and Testing Center
Shanghai Instrumentation and Automation System Inspection and Testing Institute Co., Ltd
National Explosion proof Electrical Product Quality Supervision and Inspection Center
National Explosion proof Product Quality Supervision and Inspection Center (Tianjin)
National Coal Mine Explosion proof Safety Product Quality Supervision and Inspection Center
National Nonferrous Metallurgical Electromechanical Product Quality Supervision and Inspection Center
Mechanical Industry Explosion proof Electrical Equipment Quality Supervision and Testing Center
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 Explosion proof Equipment Quality Supervision and Inspection Center (Guangdong)
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