Is one of the oldest/largest non-profit standard academic groups in the United States. The main task is to develop characteristics and performance standards, test methods and procedural standards in the fields of materials/products/systems and services, and to promote the development and promotion of relevant knowledge. Although the ASTM standard is a standard set by the unofficial academic community,it has won the official trust of the American industry because of its high quality and adaptability. It has not only been adopted by various industrial circles in the United States, but also by the US Department of Defense and the federalgovernment institutional adoption.