1970. 10. Establishment of Namsungsa
1985. 04. Converted to legal corporation under the name of Namsung Precision
1985. 04. Industry Co., Ltd.
1986. 05. Obtained ㉿ certification KS B 1545, KS B 1546) for X-L pipe fitting and
1986. 05. flair pipe fitting
1989. 02. Selected as corporation’s co-research center
1990. 02. Selected as diligent middle-sized company
1991. 12. Selected as advanced-technology middle-sized company
1992. 10. Certified drinking water pipe materials
1994. 01. Top Award for 1 1 Million Dollar Export
1994. 12. Selected as good construction material by Korea National Housing
1994. 12. Corporation
1996. 11. Obtained Korea-Technology (KT) Certification
1996. 12. Registerd in Kosdaq Stock Market
1998. 01. Obtained ISO 9002 certification
1998. 05. Obtained Venture Company certification
   
2001. 07. Changed name to World Joint Co., Ltd.
2002. 06. Obtained ㉿ certification (KS B 2308) for ball valve
2003. 02. KS A 9001 : 2001 renewed certification
2003. 04. Registered as waterworks measurement manufacturing company
2003. 04. Registered utility model for ball valve handle
2003. 05. Obtained ㉿ certification for copper soldering fitting KS B 6029)
2003. 12. Obtained Russian GOST-R Certification
2005. 11. Obtained ISO 14001 certification
2005. 12. Obtained ㉿ certification for gas valve
2006. 02. Obtained CSA certification for ball valve
2006. 02. Changed name to Namsung Precision Co., Ltd.