GB/T 20972.3-2025 Chinese PDF (GB /T20972.3-2025) GB/T 17215.241-2025 GB/T 20965-2025_Chinese: Control network HBES

GB/T 20965-2025_Chinese: Control network HBES technical specification - Home and building control system (Chinese: 控制网络HBES技术规范 住宅和楼宇控制系统)

English versions: GB/T 27530-2025

7-2025_Chinese: Test methods of rare earth phosphors for LED - Part 7: Determination of thermal quenching (Chinese: LED用稀土荧光粉试验方法 第7部分：热猝灭性能的测定)

socket-outlets and couplers for industrial purposes - Part 6: Direct current(DC) plugs

GB/T 20972.3-2025 Chinese PDF (GB /T20972.3-2025) GB/T 17215.241-2025 GB/T 20965-2025_Chinese: Control network HBESGB T 20972. 3 2025_Chinese: Petroleum and natural gas industries Materials for use in H2S containing environments in oil and gas production Part 3: Cracking resistant CRAs(corrosion resistant alloys) and other alloys (Chinese: 3) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20972. 3 2025