JOKWANG I.L.I Co., Ltd. was established in the name of JOKWANG INDUSTRIES in 1968. In 1987, it was approved as an authorized manufacturer of KS(Korea Standard) Marking valves. We have started the technical collaboration with VENN which is the valve manufacturer with long history in Japan from 1992. JOKWANG was designated as the valve manufacturer for Korea Nuclear Power Plants-KEPCO according to ASME B 31.1 in 1993. In 2000, company name was changed to JOKWANG I.L.I Co., Ltd. JOKWANG was registered on the KOSDAQ market as a venture company in 2001. We are the only one special valve maker registered on the KOSDAQ in Korea until now. Korea Government (Ministry of Knowledge Economy) had selected JOKWANG among the safety valve makers in Korea to localize the MSSV(Main Steam Safety Valve) for Nuclear Power Plant in 2002. With financial support of Korea Government, we have tried to localize it for a long time and then it was developed in 2006. At present time, we have been developing the Cryogenic Safety Relief Valve for LNG/LPG service. In 2006, we have acquired ASME Sec. VIII "UV" STAMP. In 2010~2011, The expansion of "UV" stamp range is succeed by NBBI authorized test laboratory under ASME. (Pressure : up to 6000psi, Addition : Liquid, Bellows type)