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Qualification certificate for explosion-proof electrical installation, maintenance and repairIt is one of the essential qualification certificates for companies engaged in the explosion-proof electrical construction industry. As a professional agency for handling explosion-proof electrical installation, maintenance and repair qualification certificates,Zhongnuo TestingWe have obtained corresponding certificates for hundreds of client enterprises in total. stayZhongnuo TestinghandleTraining certificate for explosion-proof electrical installation, maintenance and repair technologyAdopting online training, the training and examination standards areGB/T3836 series standardsRegular 1-2 training and examination sessions per month, with full assistance in preparing necessary documents, can save processing time and costs for corporate clients. The certificate is authentic, authoritative, and trustworthy!