GB/T 21551.6-2024 Chinese PDF (GB /T21551.6-2024) GB/T 21099.4-2024 English versions: GB/T 18737

English versions: GB/T 18737

1-dichloroethylene and 1

English versions: GB/T 1346-2024

and the use of cast irons (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁)

7-2025_Chinese: Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibers (method using formic acid) (Chinese: 纺织品 定量化学分析 第7部分：聚酰胺纤维与某些其他纤维的混合物（甲酸法）)

GB/T 21551.6-2024 Chinese PDF (GB /T21551.6-2024) GB/T 21099.4-2024 English versions: GB/T 18737GB T 21551. 6 2024_Chinese: Antimicrobial and cleaning function of household and similar electrical appliances Part 6: Particular requirements for air conditioner (Chinese: 6) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21551. 6 2024