GB/T 25216-2024 Chinese PDF (GB/T25216-2024) GB 21257-2024 English versions: GB/T 35132

English versions: GB/T 35132

English versions: GB/T 25503-2024

English versions: GB/T 45205-2024

GB/T 45126-2025_Chinese: Determination of carbon dioxide content of steel slag during carbonation fixation (Chinese: 钢渣碳酸化固定二氧化碳含量的测定方法)

GB/T 35560-2025_Chinese: Tourism services for elderly tourist specification - Tourist attraction (Chinese: 老年旅游服务规范 景区)

GB/T 25216-2024 Chinese PDF (GB/T25216-2024) GB 21257-2024 English versions: GB/T 35132GB T 25216 2024_Chinese: Regional prediction methods for the danger of coal and gas outburst (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25216 2024