William Joo, graduated Seoul National University, The chairman of KAMUG (Korean Additive User Group) Professor at Inha University Founded in 1954 to fulfill the dearest wish of empowering and bring properity to the nation. KAMUG is affiliated with Korean Ministry of science and ICT, The biggest Additive Manufacturing User Group with more than 15,000 members. He established the national roadmap of the 3D printing technology strategy in Korea. He also developed and commercialize the Korean first FDM printer, Willybot ,SLS sand printer and metal printer. Now he is developing the first Korean AM smart factory in Ulsan area to produce the AM parts for the heavy industries and automotive using the in process processing monitoring. He developed the metal 3D printed small jet engine and the tire wheel for the Hyundai Motor car, Avante.