GB/T 19688-2022 Chinese PDF (GB/T19688-2022) GB/T 19212.5-2025 English versions: YY/T 1944-2024

English versions: YY/T 1944-2024

English versions: GB 1499

English versions: GB/T 29631-2025

18-2024_Chinese: Safety requirements for electrical equipment for measurement

GB/T 45011-2024_Chinese: Test method for impact failure of fiber reinforced polymer matrix composites (Chinese: 纤维增强复合材料冲击失效试验方法)

GB/T 19688-2022 Chinese PDF (GB/T19688-2022) GB/T 19212.5-2025 English versions: YY/T 1944-2024GB T 19688 2022_Chinese: Information and documentation Bibliographic data element directory for use in data exchange and enquiry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19688 2022