GB/T 45172-2024 Chinese PDF (GB /T45172-2024) GB 31604.62-2025 GB/T 19212

GB/T 19212

GB/T 45131-2025_Chinese: Analysis of water used in boiler and cooling system - Determination of phosphate

GB/T 28185-2025_Chinese: Heat exchange unit for urban heating (Chinese: 城镇供热用换热机组)

English versions: GB/T 45154-2024

2-2025_Chinese: IPv4/IPv6 network security protection technical specifications - Part 2: Mobile communication network (Chinese: IPv4/IPv6网络安全防护技术规范 第2部分：移动通信网)

GB/T 45172-2024 Chinese PDF (GB /T45172-2024) GB 31604.62-2025 GB/T 19212GB T 45172 2024_Chinese: Sensory analysis methodology Guidelines for the measurement of the performance of a quantitative descriptive sensory panel (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45172 2024