GB/T 6730.89-2024 Chinese PDF (GB/T6730.89-2024) GB/T 30237-2025 2-2025_Chinese: Acoustics - Measurement of

2-2025_Chinese: Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 2: The close-proximity method (Chinese: 声学 道路表面对交通噪声影响的测量 第2部分：近距法)

English versions: GB/T 31392-2022

42-2024_Chinese: Requirements of the greenhouse gas emissions accounting and reporting - Part 42: Copper smelting enterprise (Chinese: 温室气体排放核算与报告要求 第42部分：铜冶炼企业)

English versions: GB/T 45384-2025

nitrogen-bearing ferromanganese and manganese metal - Determination of carbon content - The Infrared absorption method

GB/T 6730.89-2024 Chinese PDF (GB/T6730.89-2024) GB/T 30237-2025 2-2025_Chinese: Acoustics - Measurement ofGB T 6730. 89 2024_Chinese: Iron ores Determination of thorium content Arsenazo III spectrophotometric method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 6730. 89 2024