GB/T 21295-2024 Chinese PDF (GB/T21295-2024) GB/T 2684-2025 GB/T 25139-2025_Chinese: Ceramic foam filter

GB/T 25139-2025_Chinese: Ceramic foam filter for foundry (Chinese: 铸造用泡沫陶瓷过滤网)

GB/T 11730-2025_Chinese: Rural domestic water quantity (Chinese: 农村生活饮用水量)

GB/T 23453-2025_Chinese: Natural limestone slab for building (Chinese: 天然石灰石建筑板材)

GB/T 45116-2024_Chinese: Critical current measurement - DC critical current of REBCO composite superconductors (Chinese: 临界电流测量 REBCO复合超导体的直流临界电流测量)

English versions: GB/T 21307-2025

GB/T 21295-2024 Chinese PDF (GB/T21295-2024) GB/T 2684-2025 GB/T 25139-2025_Chinese: Ceramic foam filterGB T 21295 2024_Chinese: Requirements of physical and chemical performance of garments (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21295 2024