GB/T 22107-2025 Chinese PDF (GB /T22107-2025) GB/T 22251-2024 2-2025_Chinese: Household electric direct-acting room

2-2025_Chinese: Household electric direct-acting room heaters - Methods for measuring performance - Part 2: Additional provisions for the measurement of the radiant factor (Chinese: 家用直接作用式房间电加热器 性能测试方法 第2部分：辐射系数测量的附加规定)

GB/T 17263-2025_Chinese: Self-ballasted lamps for general lighting service - Performance specifications (Chinese: 普通照明用自镇流荧光灯 性能规范)

2-2025_Chinese: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 2: Cracking-resistant carbon and low alloy steels

GB/T 18867-2025_Chinese: Electronic gas - Sulphur hexaflouride (Chinese: 电子气体 六氟化硫)

English versions: GB/T 20130-2025

GB/T 22107-2025 Chinese PDF (GB /T22107-2025) GB/T 22251-2024 2-2025_Chinese: Household electric direct-acting roomGB T 22107 2025_Chinese: Pneumatic fluid power Directional control valves Measurement of shifting time (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22107 2025