GB/T 18462-2025 Chinese PDF (GB /T18462-2025) GB/T 14646-2025 GB/T 20236-2025_Chinese: Accelerated outdoor weathering

GB/T 20236-2025_Chinese: Accelerated outdoor weathering test methods for nonmetallic materials using concentrated natural sunlight (Chinese: 非金属材料的聚光加速户外暴露试验方法)

4-2025_Chinese: Test methods of rare earth phosphors for LED - Part 4: Determination of high temperature and high humidity property (Chinese: LED用稀土荧光粉试验方法 第4部分：高温高湿性能的测定)

300-2025_Chinese: National food safety standard - Determination of L-carnitine in the foods (Chinese: 食品安全国家标准 食品中左旋肉碱的测定)

GB/T 22246-2025_Chinese: Determination of pantothenic acid in health foods (Chinese: 保健食品中泛酸的测定)

GB 19578-2024_Chinese: Fuel consumption limits for passenger cars (Chinese: 乘用车燃料消耗量限值)

GB/T 18462-2025 Chinese PDF (GB /T18462-2025) GB/T 14646-2025 GB/T 20236-2025_Chinese: Accelerated outdoor weatheringGB T 18462 2025_Chinese: Laser processing machines Performance specifications for metal cutting (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18462 2025