GB/T 4948-2025 Chinese PDF (GB /T4948-2025) GB/T 45495-2025 GB/T 33555-2025_Chinese: Cleanrooms and associated

GB/T 33555-2025_Chinese: Cleanrooms and associated controlled environments - Technical requirements of electrostatic control (Chinese: 洁净室及相关受控环境 静电控制技术要求)

GB/T 45362-2025_Chinese: Textiles - Determination of thermal effusivity of fabrics - Modified transient plane source method (Chinese: 纺织品 织物蓄热系数的测定 改型平面瞬态热源法)

GB/T 7143-2025_Chinese: Methods for chemical analysis of silica sand for foundry (Chinese: 铸造用硅砂化学分析方法)

English versions: GB/T 20424-2025

GB/T 4948-2025 Chinese PDF (GB /T4948-2025) GB/T 45495-2025 GB/T 33555-2025_Chinese: Cleanrooms and associatedGB T 4948 2025_Chinese: Sacrificial anode of aluminum alloy (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 4948 2025