GB/T 31960.12-2024 Chinese PDF (GB/T31960.12-2024) GB/T 17889.4-2024 English versions: GB/T 45538-2025

English versions: GB/T 45538-2025

English versions: GB/T 44891-2024

English versions: GB/T 17273-2023

GB/T 3920-2024_Chinese: Textiles - Tests for colour fastness - Colour fastness to rubbing (Chinese: 纺织品 色牢度试验 耐摩擦色牢度)

62-2025_Chinese: National food safety standard - Food contact materials and products - Determination of migration and release of N-nitrosamines (Chinese: 食品安全国家标准 食品接触材料及制品 N-亚硝胺类化合物迁移量和释放量的测定)

GB/T 31960.12-2024 Chinese PDF (GB/T31960.12-2024) GB/T 17889.4-2024 English versions: GB/T 45538-2025GB T 31960. 12 2024_Chinese: Technical specification of power energy efficiency monitoring system Part 12: Construction guidelines (Chinese: 12) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31960. 12 2024