节水型企业　建材行业Water saving enterprises—Building materials industryICS 03.100.50CCS P 01中华人民共和国国家标准GB/T 44566—20242024-09-29 发布2025-01-01 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 ··································································...