GB/T 20384-2024 Chinese PDF (GB/T20384-2024) GB/T 27866-2023 1-2025_Chinese: Test methods of rare

1-2025_Chinese: Test methods of rare earth phosphors for LED - Part 1: Determination of spectrum (Chinese: LED用稀土荧光粉试验方法 第1部分：光谱的测定)

1-2023_Chinese: Plain bearings - Metallic multilayer plain bearings - Part 1: Non-destructive ultrasonic testing of bond of thickness greater than or equal to 0

GB/T 35609-2025_Chinese: Green product assessment - Waterproof matreials and sealants (Chinese: 绿色产品评价 防水与密封材料)

English versions: GB 31335-2024

3-2024_Chinese: Optics and photonics - Microlens arrays - Part 3: Test methods for optical properties (Chinese: 光学和光子学 微透镜阵列 第3部分：光学特性测试方法)

GB/T 20384-2024 Chinese PDF (GB/T20384-2024) GB/T 27866-2023 1-2025_Chinese: Test methods of rareGB T 20384 2024_Chinese: Textiles Determination of chlorobenzenes and chlorinated toluenes (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20384 2024