GB 4234.9-2023 Chinese PDF GB/T 33588.1-2025 21-2025_Chinese: Test method for noise

21-2025_Chinese: Test method for noise of household and similar electrical appliances - Part 21: Particular requirements for oral hygiene appliances (Chinese: 家用和类似用途电器噪声测试方法 第21部分：口腔卫生器具的特殊要求)

GB/T 45387-2025_Chinese: Management-control integration reference model of discrete intelligent factories (Chinese: 离散型智能工厂管控一体化集成参考模型)

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)

English versions: GB/T 45282-2025

GB/T 43707-2025_Chinese: Scientific data provenance metadata (Chinese: 科学数据溯源元数据)

GB 4234.9-2023 Chinese PDF GB/T 33588.1-2025 21-2025_Chinese: Test method for noiseGB 4234. 9 2023_Chinese: Implants for surgery Metallic materials Part 9: Wrought high nitrogen stainless steel (Chinese: 9) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 4234. 9 2023