低压输水灌溉用薄壁硬聚氯乙烯(PVC-U)管材
Thin wall unplasticized polyvinyl chloride (PVC-U) pipes for low-pressure conveyance in irrigation
标准状态
发布于：1992-09-03
实施于：1993-06-01
已废止
基本信息
内容预览
Thin wall unplasticized polyvinyl chloride (PVC-U) pipes for low-pressure conveyance in irrigation