成人自拍视频

The ISO International Standard compiled by Department’s Professors has been officially published

The International Organization for Standardization (ISO) has recently released ISO 23930: 2023 "Fibre-reinforced plastic composites — Full-section compressive test for pultruded profiles." This standard, initiated and led by Professor Feng Peng of Tsinghua University’s Department of Civil Engineering, marks China’s first international leadership in composite materials technology standard.