Home / Standards / GB/Z 166-2026 GB/Z 166-2026 Active Paper and board—Measurement of water contact angle by optical methods 纸和纸板 水接触角的光学测量方法 Standard Type GBZ ICS 85.060 CCS Y 30 Status 现行 Issue Date 2026-02-27 Implementation N/A Responsible Dept 中国轻工业联合会 Drafting Unit N/A