GB/T 17699.2-2024 Chinese PDF (GB/T17699.2-2024) GB/T 45259-2025 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

2-2025_Chinese: Test methods of rare earth phosphors for LED - Part 2: Determination of relative brightness (Chinese: LED用稀土荧光粉试验方法 第2部分：相对亮度的测定)

GB/T 45464-2025_Chinese: Test method for modifier content of SBS modified asphalt for road engineering (Chinese: 道路用苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）改性沥青改性剂含量检测方法)

English versions: GB/T 45350-2025

English versions: GB/T 24055

GB/T 17699.2-2024 Chinese PDF (GB/T17699.2-2024) GB/T 45259-2025 2-2025_Chinese: Petroleum and natural gasGB T 17699. 2 2024_Chinese: Electronic data interchange for administration, commerce and transport(EDIFACT) Part 2: Composite data elements directory (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 17699. 2 2024