GB/T 30491.2-2024 Chinese PDF (GB/T30491.2-2024) GB/T 28108-2025 English versions: GB/T 45319-2025

English versions: GB/T 45319-2025

English versions: GB 32047-2025

GB/T 17818-2025_Chinese: Determination of vitamin D3 in feeds - High-performance liquid chromatography (Chinese: 饲料中维生素D3的测定 高效液相色谱法)

3-2023_Chinese: Information technology - Conformance testing for the biometric application programming interface (BioAPI) - Part 3: Test assertions for BioAPI frameworks (Chinese: 信息技术 生物特征识别应用程序接口（BioAPI）的符合性测试 第3部分：BioAPI框架的测试断言)

English versions: GB/T 45239-2025

GB/T 30491.2-2024 Chinese PDF (GB/T30491.2-2024) GB/T 28108-2025 English versions: GB/T 45319-2025GB T 30491. 2 2024_Chinese: Natural gas Calculation of thermodynamic properties Part 2: Single phase properties(gas, liquid, and dense fluid)for extended ranges of application (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30491. 2 2024