GB/T 5169.49-2024 Chinese PDF (GB/T5169.49-2024) GB 21456-2024 1-2024_Chinese: Fire shutter assembly -

1-2024_Chinese: Fire shutter assembly - Part 1: General technical specification (Chinese: 防火卷帘 第1部分：通用技术条件)

GB/T 22330

GB/T 19544-2024_Chinese: Classification and general technology requirements of spinal orthoses (Chinese: 脊柱矫形器的分类及通用技术条件)

GB/T 45491-2025_Chinese: Brand valuation - Senior care services industry (Chinese: 品牌价值评价 养老服务业)

GB/T 45540-2025_Chinese: Greenhouse gas - Quantification method and requirements for carbon footprint of products - Man-made fibres (Chinese: 温室气体 产品碳足迹量化方法与要求 化学纤维)

GB/T 5169.49-2024 Chinese PDF (GB/T5169.49-2024) GB 21456-2024 1-2024_Chinese: Fire shutter assembly -GB T 5169. 49 2024_Chinese: Fire hazard testing for electric and electronic products Part 49: Arc test method Arc ignition test method for materials (Chinese: 49 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5169. 49 2024