GB/T 43815-2024建筑用硬聚氯乙烯(PVC-U)绝缘电工套管及配件国家标准
英文:Electrical insulation conduits and fittings of unplasticized poly(vinyl chloride) (PVC-U) inside buildings GB/T 43815...
英文:Electrical insulation conduits and fittings of unplasticized poly(vinyl chloride) (PVC-U) inside buildings GB/T 43815...