2021 International Conference on Mechanical, Electronic and Electrical Technology and Material Science （METMS 2021）will be held on February 26-28, 2021 in Xiamen, China. METMS 2021 provides an enabling platform for innovative academics, engineers and industrial experts in the field of Mechanical, Electronic and Electrical Technology and Material Science to exchange new ideas and present research results.This conference also promotes the establishing of business or research relations among global partners for future collaboration. We hope that this conference could make significant contribution to the update of knowledge about these latest scientific field. We sincerely invite you to participate in METMS 2021 and look forward to seeing you in Xiamen!