GB/T 4340.1-2024 Chinese PDF (GB/T4340.1-2024) GB/T 45258-2025 raw natural and raw synthetic

raw natural and raw synthetic - Sampling and further preparative procedures (Chinese: 天然、合成生胶 取样及其制样方法)

English versions: GB/T 27534

English versions: GB/T 45525

201-2023_Chinese: Organic light emitting diode(OLED)light sources for general lighting - Safety - Part 2-1: Particular requirements - Semi-integrated OLED modules (Chinese: 普通照明用有机发光二极管（OLED）光源 安全 第2-1部分：特殊要求 半集成式OLED模块)

81-2024_Chinese: Safety of household and similar electrical appliances - Part 81: Particular requirements for vaporizers (Chinese: 家用和类似用途电器的安全 第81部分：挥发器的特殊要求)

GB/T 4340.1-2024 Chinese PDF (GB/T4340.1-2024) GB/T 45258-2025 raw natural and raw syntheticGB T 4340. 1 2024_Chinese: Metallic materials Vickers hardness test Part 1: Test method (Chinese: 1: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 4340. 1 2024