GB/T 19720-2024 Chinese PDF (GB/T19720-2024) GB/T 45575-2025 English versions: GB/T 45251-2025

English versions: GB/T 45251-2025

GB/T 23453-2025_Chinese: Natural limestone slab for building (Chinese: 天然石灰石建筑板材)

3-2024_Chinese: Devices and integration in enterprise systems - Function blocks(FB) for process control and electronic device description language (EDDL) - Part 3: EDDL syntax and semantics (Chinese: 企业系统中的设备和集成 过程控制用功能块（FB）和电子设备描述语言（EDDL） 第3部分：EDDL语法与语义)

42-2025_Chinese: National food safety standard - Food microbiological examination - Examination of Norwalk Viruses (Chinese: 食品安全国家标准 食品微生物学检验 诺如病毒检验)

English versions: GB/T 13539

GB/T 19720-2024 Chinese PDF (GB/T19720-2024) GB/T 45575-2025 English versions: GB/T 45251-2025GB T 19720 2024_Chinese: Jewellery and precious metals Determination of platinum and palladium Gravimetry using ammonium chloride and dimethylglyoxime (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19720 2024