ICS 79.010CCS B 68中华人民共和国国家标准GB/T 44290—2024木材与木制品生物碳含量计算方法Calculation method of biogenic carbon content in wood and wood-based products2024-09-29 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 ··················································...