GB/T 3939.2-2023 Chinese PDF (GB/T3939.2-2023) GB/T 20972.3-2025 English versions: GB 14102

English versions: GB 14102

English versions: GB/T 20936

GB/T 13930-2024_Chinese: Water ring vacuum pumps and compressors - Method for measurement of volume flow of gas (Chinese: 水环真空泵和水环压缩机 气量测定方法)

English versions: GB 14371-2024

1-2024_Chinese: Stainless steel press-fitting assemblies - Part 1: Press-fittings (Chinese: 不锈钢卡压式管件组件 第1部分：卡压式管件)

GB/T 3939.2-2023 Chinese PDF (GB/T3939.2-2023) GB/T 20972.3-2025 English versions: GB 14102GB T 3939. 2 2023_Chinese: Nomenclature and signs of main fishing gear material Part 2: Netting (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 3939. 2 2023