GB/T 25503-2024 Chinese PDF (GB/T25503-2024) GB/T 2394-2024 GB/T 18867-2025_Chinese: Electronic gas -

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

English versions: GB/T 2820

GB/T 45132-2025_Chinese: Tires intelligent manufacturing - Interconnection network architecture - General specification (Chinese: 轮胎智能制造 互联网络架构 通用规范)

GB/T 42147-2022_Chinese: Metadata for webpage electronic document of government website (Chinese: 政府网站网页电子文件元数据)

GB/T 45134-2025_Chinese: Petroleum drilling and production equipment - Near-bit geosteering drilling systems (Chinese: 石油天然气钻采设备 近钻头地质导向钻井系统)

GB/T 25503-2024 Chinese PDF (GB/T25503-2024) GB/T 2394-2024 GB/T 18867-2025_Chinese: Electronic gas -GB T 25503 2024_Chinese: Requirements in sell and market service of city gas burning appliances (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25503 2024