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English versions: GB/T 38055
2-2024_Chinese: Non-destructive testing - Penetrant testing - Part 2: Testing of penetrang materials (Chinese: 无损检测 渗透检测 第2部分：渗透材料的检验)
hardness and iron - Spectrophotometric detection by discrete analysis systems (Chinese: 锅炉用水和冷却水分析方法 磷酸盐、氯化物、硅酸盐、总碱度、酚酞碱度、硬度和铁的测定 基于间断分析系统的分光光度法)
English versions: GB/T 45198-2024
GB/T 30843
GB 29140-2024 Chinese PDF GB/T 22252-2024 English versions: GB/T 38055GB 29140 2024_Chinese: Norm of energy consumption per unit production of soda ash (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 29140 2024
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