热塑性塑料分集水器Water distribution and collection devices of thermoplastics materialsICS 83.140.30CCS G 33中华人民共和国国家标准GB/T 44579—20242024-09-29 发布2025-04-01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言 ···························································...