GB/T 32517-2024 Chinese PDF (GB/T32517-2024) GB/T 22385-2025 3-2024_Chinese: Fire shutter assembly -

3-2024_Chinese: Fire shutter assembly - Part 3: Control unit for fire shutter assembly (Chinese: 防火卷帘 第3部分：防火卷帘控制器)

1-2023_Chinese: Agricultural irrigation equipment - Sprinklers - Part 1: Definition of terms and classification (Chinese: 农业灌溉设备 喷头 第1部分：术语和分类)

GB/T 41869

GB/T 30757-2024_Chinese: Classification of basic dense shaped refractory products containing from 7% to 50% carbon (Chinese: 碳含量7%～50%的碱性致密定形耐火制品分类)

English versions: GB/T 22250-2025

GB/T 32517-2024 Chinese PDF (GB/T32517-2024) GB/T 22385-2025 3-2024_Chinese: Fire shutter assembly -GB T 32517 2024_Chinese: Installation couplers intended for permanent connection in fixed installations (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 32517 2024