GB/T 26990-2023 Chinese PDF (GB/T26990-2023) GB/T 21666-2025 GB/T 45402-2025_Chinese: Smart city -

GB/T 45402-2025_Chinese: Smart city - City intelligent center - Reference architecture (Chinese: 智慧城市 城市智能中枢 参考架构)

GB 4824-2025_Chinese: Industrial

GB/T 22310-2023_Chinese: Road vehicles - Brake linings - Effects of heat on dimensions and form of disc brake pads test method (Chinese: 道路车辆 制动衬片 盘式制动衬块受热膨胀量试验方法)

5-2025_Chinese: National food safety standard - Determination of protein in food (Chinese: 食品安全国家标准 食品中蛋白质的测定)

GB/T 26990-2023 Chinese PDF (GB/T26990-2023) GB/T 21666-2025 GB/T 45402-2025_Chinese: Smart city -GB T 26990 2023_Chinese: Fuel cell electric vehicles Onboard hydrogen system technical specifications (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 26990 2023