The joint surfaces (i.e., flameproof joint surfaces) of flameproof explosion-proof electrical equipment are the key structures that prevent the spread of internal explosive flames to the external envi……
Qualification for Installation, Overhaul and Maintenance of Explosion-proof Electrical Equipment (mainly the Certificate of Competence for Installation, Overhaul and Maintenance of Explosion-proof Ele……
Many customers ask: What certificates are required for explosion-proof products to be marketed? Can one certificate be used universally? Zhongnuo Testing （STS）clearly states: One certificate cannot……
.jpg "Application Procedure for Ex Electrical Equipment Installation & Maintenance Qualification")
.jpg "STS | Professional Ex certification consulting service organization")
.jpg "Can an Ex Certificate be used to Global?")
