GB/T 20850-2025 Chinese PDF (GB /T20850-2025) GB/T 19183.1-2024 GB 15605-2024_Chinese: Specifications for pressure

GB 15605-2024_Chinese: Specifications for pressure venting of dust explosion (Chinese: 粉尘爆炸泄压规范)

2-2024_Chinese: Public information guidance systems - Setting principles and requirements - Part 2: Airport (Chinese: 公共信息导向系统 设置原则与要求 第2部分：民用机场)

1-2025_Chinese: Determination of the ultimate aerobic biodegradability of plastic materials under conctrolled composting conditions - Method by analysis of evolved cabon dioxide - Part 1: General method (Chinese: 受控堆肥条件下材料最终需氧生物分解能力的测定 采用测定释放的二氧化碳的方法 第1部分：通用方法)

1-2024_Chinese: Non-destructive testing - Penetrant testing - Part 1: General principles (Chinese: 无损检测 渗透检测 第1部分：总则)

“dry” and “wet” conditions (Chinese: 金属和合金的腐蚀 循环暴露在盐雾、“干”和“湿”条件下的加速试验)

GB/T 20850-2025 Chinese PDF (GB /T20850-2025) GB/T 19183.1-2024 GB 15605-2024_Chinese: Specifications for pressureGB T 20850 2025_Chinese: Safety of machinery Guidelines for the application of machinery safety standards (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20850 2025