GB/T 21397-2023 Chinese PDF (GB/T21397-2023) GB/T 45359.2-2025 GB/T 45171-2024_Chinese: Determination of microwave

GB/T 45171-2024_Chinese: Determination of microwave heating temperature of plastics materials and articles at the plastics food interface (Chinese: 塑料类食品接触材料及制品在微波加热条件下与食品接触面温度的测定)

GBZ45064-2024_Chinese: Equipment for general lighting purposes - Stroboscopic effects - Objective test method (Chinese: 普通照明用设备 频闪效应 客观试验方法)

GB/T 20424-2025_Chinese: The specification for limit on harmful element content of the heavy nonferrous metal concentrates products (Chinese: 重有色金属精矿产品中有害元素的限量规范)

GB/T 31036-2025_Chinese: Proton exchange membrane fuel cell backup power system - Safety (Chinese: 质子交换膜燃料电池备用电源系统 安全)

English versions: GB/T 14536

GB/T 21397-2023 Chinese PDF (GB/T21397-2023) GB/T 45359.2-2025 GB/T 45171-2024_Chinese: Determination of microwaveGB T 21397 2023_Chinese: Cotton harvesters (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21397 2023