Welcome to the 2021 The 6th International Conference on Materials Technology and Applications (ICMTA 2021). The conference will be held from October 30 to November 02, 2021 in Fukuoka, Japan. The conference will be held in conjunction with ICNNN 2020 as the workshop, providing great opportunity for ICMTA participants to meet researchers in other related fields as well. ICMTA2021 would be an excellent international conference for sharing knowledge and results in Materials Technology and Applications. The primary goal of the conference is to exchange, share and distribute the latest research and theories from our international community. The conference will be held every year to make it an ideal platform for people to share views and experiences in Materials Technology and Applications related fields. The 6the ICMTA is to be held in Fukuoka, Japan during Oct. 30 to Nov. 02.