LONGDIAN.LONGDIAN is a leading domestic manufacturer of high and low voltage power distribution equipment, explosion-proof electrical appliances, and high-protection-rated electrical enclosures. The company specializes in the R&D, production, and sales of box-type substations, high and low voltage distribution cabinets, explosion-proof electrical appliances, industrial automation control systems, and high-protection-rated electrical enclosures. LONGDIAN's management practices fully align with international standards. In 2004, it was the first to obtain ISO 9001 Quality Management System certification (DNV Norway), followed by ISO 14001 Environmental Management System and OHSAS 18001 Occupational Health and Safety Management System certifications. Select products hold certifications from China Classification Society (CCS), Det Norske Veritas (DNV), Bureau Veritas (BV), and American Bureau of Shipping (ABS). Twelve models of withdrawable and fixed low-voltage switchgear cabinets—including MNS, GCS, GCK, GGD, GGJ, GFH10, GGD6, CFD, XL, PXTF, XDD, and PZ—have obtained EU CE certification. Selected explosion-proof electrical products have passed EU ATEX certification and IECEx certification from the International Electrotechnical Commission. Key products include: explosion-proof junction boxes, explosion-proof control columns and control boxes, explosion-proof positive pressure cabinets, explosion-proof switches, explosion-proof monitoring products, explosion-proof cable glands and accessories, explosion-proof pipe fittings, PZ lighting distribution boxes, PXTF low-voltage distribution boxes, XDD metering boxes, CFD low-voltage power distribution cabinets, XL AC low-voltage power distribution cabinets, GGD AC low-voltage distribution cabinets, GCK low-voltage withdrawable switchgear, GCS low-voltage withdrawable switchgear, MNS low-voltage withdrawable switchgear, KYN28A indoor AC metal-clad withdrawable switchgear, and XBZ1 box-type substations.
