GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 GB/T 18649-2024_Chinese: Diagnostic techniques for

GB/T 18649-2024_Chinese: Diagnostic techniques for contagious bovine pleuropneumonia (Chinese: 牛传染性胸膜肺炎诊断技术)

5-2025_Chinese: Interconnection and interoperation for textile equipment - Part 5: Nonwovens (Chinese: 纺织装备互联互通与互操作 第5部分：非织造)

English versions: GB/T 17216-2025

GB/T 22452-2025_Chinese: General specification of non-linear optical borate crystal devices (Chinese: 硼酸盐非线性光学单晶元件通用规范)

English versions: GB 32047-2025

GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 GB/T 18649-2024_Chinese: Diagnostic techniques forGB T 45131 2025_Chinese: Analysis of water used in boiler and cooling system Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron Spectrophotometric detection by discrete analysis systems (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45131 2025