IClass (coal mine) certification authority:

National Safety Mark Center for Mining Products:

AAdministrative division: Under the jurisdiction of the National Administration of Work Safety.

BJob responsibilities: Undertake all work related to the management of safety signs for mining products, including certification, technical review, on-site review, product sampling inspection, and supervision and management after certification.

IClass testing agency:

 Currently, there are22The home testing unit has been awarded a Class A qualification and can independently carry out product testing work. The institutions are not listed here, and can be found on the safety standard website. Common examples include coal science institutes in Shanghai, Fushun, Chongqing, Changzhou, etc.

Certification process:

Online application--Acceptance by Safety Standard Center--Distribute inspection tasks to testing units--The testing unit uploads materials and test reports to the safety standard center--Audit by the Safety Standards Center--On site review--Certificate issuance

 Note: The first application for safety certification must go through an on-site safety review. After obtaining evidence, it is necessary to follow1second/Annual supervision review for the year. If the newly applied product cannot be covered, an on-site review will also be conducted during the application.

 For example, if the intrinsic safety category cannot cover the explosion-proof category, an on-site evaluation must be conducted when applying for certification.

IIClassIIIClass issuing institution:

CQST:National Explosion proof Certification Electrical Product Quality Supervision and Inspection Center

 Abbreviation: Nanyang Explosion Prevention Institute

Location: Nanyang City, Henan Province

Qualification: It is an A-level institution authorized by the country earlier, and can also conductIInspection of similar products.

PCECPetroleum and Chemical Industry Electrical Product Explosion Prevention Quality Supervision and Inspection Center

Abbreviation: TianjinPCEC

Location: Tianjin City

Qualification: Administratively affiliated with CNOOC Corporation, also one of the earliest domestic qualifications obtainedIIClass IIIOne of the issuing units authorized for explosion-proof testing.

NEPSINational level instrument explosion-proof safety supervision and inspection station

Abbreviation: Shanghai Institute of Instruments and Meters

Location: Shanghai

Qualification: Established1960Year, on2003Becoming an independent registered legal entity in, it has a high reputation in China.

CHEMQuality Supervision and Inspection Center for Explosion proof Electrical Equipment in the Mechanical Industry

 Abbreviation: Jiamusi Explosion Prevention Institute

Location: Jiamusi City, Heilongjiang Province

Qualifications:2011The Ministry of Science and Technology approved the construction in, and has helped many enterprises in the north obtain explosion-proof certificates to this day.

CQCExNational Quality Supervision and Inspection Center for Explosion proof Equipment (Guangdong)

Abbreviation: Guangdong Special Inspection Institute

Location: Guangzhou City, Guangdong Province

Qualifications:2016Authorized by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China in, it filled the current situation of institutions without epidemic prevention certificates in southern China and has developed rapidly in recent years.

 Note: Provincial and municipal quality supervision bureaus will conduct periodic quality supervision and spot checks on explosion-proof equipment circulating in the market, as well as on enterprises producing explosion-proof equipment. The sampled products will be sent to relevant explosion-proof institutions for testing. Once the testing fails, it will more or less affect the production and operation of enterprises.