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2021
11Achieved patent of Valve rotation device with oil hole
2017
04Establishment of research and development department
04Achieved patent of Guide Bar
2013
08Achieved ISO 9001 and ISO 14001 Certification.(German Cert)
2009
10Authorized supplier of Doosan.
2006
05Registration in Venture Business (KIBO).
2004
10Authorized supplier of STX
2002
08Authorized supplier of HYUNDAI SAMHO.
2000
01Authorized supplier of HHI.
01Authorized supplier of HMD.
04Authorized supplier of STX Shipbuilding.
06Establishment of USAM ENGINEERING CO., LTD.
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