3rd International Workshop on New Material Technologies (IWNMT 2020) is organized by Hong Kong Society of Mechanical Engineers(HKSME). The conference will be held in Sanya, China, from Nov.5-8, 2020, in conjunction with 3rd International Conference on Materials Science and Manufacturing Engineering (MSME 2020) We warmly welcome prospective authors to submit your research papers to IWNMT 2020, and share your latest research results and valuable experiences with other top-scientists, engineers and scholars from all over the world.