RCE-DR(Reactive Co-Evaporation by Deposition and Reaction) is the most promising process for real commercialization of coated conductor that is the fastest and high thruput process.GdBCO(GdBa2Cu3O7-y) coated conductor was already commercialized that is km long and high critical current over 600A/cmw.by SuNAM Co.in Korea using RCE-DR process.SmBCO(SmBa2Cu3O7-y) coated conductor with high critical current over 1,000A/cmw.had been fabricated by RCE-CDR(Reactive Co-Evaporation by Cyclic Deposition and Reaction) that is slightly different process from RCE-DR.