GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 English versions: GB/T 45100-2024

English versions: GB/T 45100-2024

English versions: GB/T 45206-2025

GB 20943-2025_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies (Chinese: 交流-直流和交流-交流电源能效限定值及能效等级)

4-2025_Chinese: Urine-absorbing aids for incontinence - Polyacrylate superabsorbent powders - Part 4: Test method for the moisture content as weight loss upon heating (Chinese: 失禁者用尿液吸收剂 聚丙烯酸酯高吸水性粉末 第4部分：用加热失重法测定水分含量)

GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 English versions: GB/T 45100-2024GB 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