1995 11.    Established as Jeong Woo Coupling Co.,Ltd
1997 9.      Korea Register of Shipping -Type Approval Certificate (KR:BSN80030-PE001)
1998 6.      American Bureau of Shipping -Type Approval Certification (ABS:98-BK41981-X)
1998 8.      Lloyd’s Register of Shipping -Type Approval Certificate (LR:98/40008)
1999 1.      Designated the technology competition company (SMBA:AT 99-060)
1999 2.      Det Norske Veritas -Type Approval Certificate (DNV:P-10380)
1999 3.      Bureau Veritas -Certificate of Type Approval (BV:2105H/0809/A0/PRSO BV)
1999 4.      Bureau Veritas Quality Internation -Certificate of Approval (BVQI-NO.56427)
1999 4.      Certified the potential company for exporting (SMIPC:1999-0464)
1999 6.      Designated the innovative technology company (SMBA: P55530)
1999 9.      Designated the leading company VISION 21 (SMBA:1-2-104)
1999 10.    (Move to address : 171-26, Gamjeon 1-dong, Sasang-gu, Busan, Korea
1999 10.    Registered Clamp for connection the pipe (KITO:0163972)
1999 12.    Germanischer Lloyd - GL Type Approval Certificate (GL:14978-99HH)
1999 12.    Bureau Veritas Certificated of Works Approval (BV:PSN/12502/1.A0)

2000 3.      Registered Elbow repair clamp (KITO:0181928)
2000 3.      Designated Exporting company by KOTRA (KOTRA, PMC, SMBA)
2000 5.      Registro Italiano Navale -Type Approval Certificate (RINA:MAC/534400/1~2/TO/00)
2000 9.      Certified CE mark (ECMD 98/37/EC)
2002 5.      Cerfified ISO 9001:2000 (BVQI-NO.110018)
2003 3.      Registered by Japanese Water and Wastewater works Association (JWWA G-512)
2003 6.      Registered by Japanese Fire Safety Association (JFESC 2003-647)
2004 9.      Registered Connection for pipe line (KITO 0363185)
2005 2.      (Move to 128-40, Maeri, Sangdong-myeon, Gimhae-si, Gyeongnam, Korea
2005 7.      Registered MP JOINT (KITO:0623581)
2005 8.      Renewed ISO 9001-2000 (BVQI NO.176243)
2005 12.    Registered Korean world - class product award 2005 (MOCIE NO.2005-346)