GB/T 28168-2025 Chinese PDF (GB /T28168-2025) GB/T 20405.5-2025 2-2025_Chinese: Petroleum and natural gas

2-2025_Chinese: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 2: Cracking-resistant carbon and low alloy steels

GB/T 32865-2025_Chinese: Quality requirements and test methods for tight sandstone gas products (Chinese: 致密砂岩气产品质量要求和试验方法)

3-2025_Chinese: Norm of water intake for industry in the Yellow River basin - Part 3: Coal to olefin (Chinese: 黄河流域工业用水定额 第3部分：煤制烯烃)

English versions: GB/T 30889-2024

measuring or monitoring of protective measures - Part 11: Effectiveness of residual current monitors(RCM)in TT

GB/T 28168-2025 Chinese PDF (GB /T28168-2025) GB/T 20405.5-2025 2-2025_Chinese: Petroleum and natural gasGB T 28168 2025_Chinese: Information technology Middleware Technical requirement for message oriented middleware (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28168 2025