Home / Standards / GB/T 22899.1-2008 GB/T 22899.1-2008 Active Paper and board - Measurement of hygroexpansivity - Part 1: Hygroexpansivity up to a maximum relative humidity of 68% 纸和纸板 湿膨胀率的测定 第1部分：最大相对湿度增加到68%过程的湿膨胀率 Standard Type GBT ICS 85.010 CCS Y30 Status 现行 Issue Date 2008-12-30 Implementation 2009-09-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A