explosion proof certification

1)KTL Korea industrial technology testing laboratory (KTL) is an experimental evaluation institution established by 1966 to improve industrial technology with the support of experimental evaluation technology, and it is an advanced (developed) country. ...

2)NEMKO is a global independent testing and certification institution for mechanical and electrical products. Originally established in 1933, the headquarters is in Oslo, Norway.

3)NEPSI Shanghai Instrument Research Institute

4)CQST National Explosion-proof Electrical Product Quality Supervision and Inspection Center (Nanyang Explosion-proof Electrical Research Institute)

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