ICS 65.050CCS B 72中华人民共和国国家标准GB/T 14020—2024氢　化　松　香Hydrogenated rosin代替 GB/T 14020—20062024-09-29 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 ·············································································...