We have been manufacturing valves used for marine, steel cast and bronze products for 30years. As we supply Pneumatic emergency shut-off valves. Bronze-valves. Cast steel & Cast iron valves etc for global shipyards. our goods of quality is proved excellent. In May 1999, we invested in Hgh Frequency Furnace and Spectrometer to manufacture the best products at Nok-san industrial complex.We will work hard with the utmost dedication to complete customer satisfaction.