GB/T 22939.1-2025 Chinese PDF (GB /T22939.1-2025) GB 45669.1-2025 setting time and soundness of

setting time and soundness of the Portland cement (Chinese: 水泥标准稠度用水量、凝结时间与安定性检验方法)

1-2024_Chinese: Methods for chemical analysis of lithium cobalt oxide - Part 1: Determination of cobalt content - EDTA titration and potentiometric titration (Chinese: 钴酸锂化学分析方法 第1部分：钴含量的测定 EDTA 滴定法和电位滴定法)

GB 28263-2024_Chinese: Regulations of safety management for the civil explosive products’ production and sales enterprise (Chinese: 民用爆炸物品生产、销售企业安全管理规程)

3-2024_Chinese: Technical requirements and test method for sports field - Part 3: Baseball and softball field (Chinese: 体育场地使用要求及检验方法 第3部分：棒球、垒球场地)

GB/T 21638-2025_Chinese: Microbeam analysis - Guidelines for electron beam microanalysis of defects in steel materials (Chinese: 微束分析 钢铁材料缺陷电子束显微分析方法通则)

GB/T 22939.1-2025 Chinese PDF (GB /T22939.1-2025) GB 45669.1-2025 setting time and soundness ofGB T 22939. 1 2025_Chinese: Package of household and similar electrical appliances Part 1: General requirements (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22939. 1 2025