GB/T 30757-2024 Chinese PDF (GB/T30757-2024) GB/T 44909-2024 GB/T 28589-2024_Chinese: Geographic information -

GB/T 28589-2024_Chinese: Geographic information - Positioning services (Chinese: 地理信息 定位服务)

352-2022_Chinese: Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs) (Chinese: 低压电涌保护器元件 第352部分：电信和信号网络的电涌隔离变压器(SIT)的选择和使用导则)

English versions: GB/T 14078-2024

English versions: GB/T 144-2024

GB/T 45311-2025_Chinese: Tidal energy converter - Sea trial technical requirements (Chinese: 潮流能转换装置 海上试验技术要求)

GB/T 30757-2024 Chinese PDF (GB/T30757-2024) GB/T 44909-2024 GB/T 28589-2024_Chinese: Geographic information -GB T 30757 2024_Chinese: Classification of basic dense shaped refractory products containing from 7% to 50% carbon (Chinese: 7%50%) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30757 2024