Home / Standards / GB/T 42951-2023 GB/T 42951-2023 Active Timekeeping instruments—Watch external parts made of hard material—General requirements and test methods 计时仪器 硬材料制造的手表外观件 一般要求和试验方法 Standard Type GBT ICS 39.040.10 CCS Y11 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A