GB/T 25138-2024 Chinese PDF (GB/T25138-2024) GB/T 24238-2025 GB 21342-2025_Chinese: Norm of energy

GB 21342-2025_Chinese: Norm of energy consumption per unit production of coke (Chinese: 焦炭单位产品能源消耗限额)

GB/T 30805-2024_Chinese: Thermal insulating products for building applications - Determination of short-term water absorption by partial immersion (Chinese: 建筑用绝热制品 部分浸入法测定短期吸水量)

GB/T 45608-2025_Chinese: Gas-filled ionization chamber for X and γ-ray (Chinese: X、γ射线充气电离室)

English versions: GB/T 24091-2024

GB/T 25138-2024 Chinese PDF (GB/T25138-2024) GB/T 24238-2025 GB 21342-2025_Chinese: Norm of energyGB T 25138 2024_Chinese: Standard silica sand for checking foundry binder (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25138 2024