Mar. 2006.03 Supply Lanfranco nut to K-star(Thermonuclear power plant).
Apr. 2005.04 Viblock enter into a contract to be the J.Lanfranco sole distributor in Korea
May. 2002.05 Established Viblock company
Oct. 2009.10 Supply of ESL, ERM selflocking nut for Gimhae light rail vehicle and rail
Nov. 2008.11 Supply of ERM, ESL selflocking nut for Yongin light rail vechicle and rail
Oct. 2007.10 Supply of ESL selflocking nut for Korea Western, southern and
                                            KOSEP thermal power generation
Aug. 2007.08 Supply of ERM selflocking nut Seoul-Busan HighSpeed Railway
Oct. 2010.10 Supply of ESL nut to advanced high speed Rail train(Hemu)
Oct. 2010.10 Registered as a supplier to Hyundai-Wia