January 1983 : Samjung Science was found by H.W. Cha (Gregory Cha).
January 1987 : registered in KOIMA (Korea Importers Association).
June 1987 : Samjung Science changed its name as Samin Trading Co..
October 1987 : made a first contract with Carl Zeiss.
November 1987 : made a first contract with Somso Modelle GmbH.
February 1989 : made a contract with FlexWatt USA.
March 1989 : H.W. Cha (Gregory Cha) was appointed a member of consultative committee for Department of Life Science in POSTECH.
May 1990 : Samin Trading Co. contracted MOU with Yeungnam University.
January 1999 : made a first contract with Beckman Coulter.
April 1999 : registered in KITA (Korea International Trade Association).
October 2003 : made a first contract with IMT i-Solution Inc.
January 2005 : made a contract with Pulley-Man Korea.
July 2015 : made a first agreement with YSP (KSI and Procon X-Ray CT)
November 2015 : made a first agreement with JSK BioMed (Seahorse Bioscience).
December 2015 : Samin Trading Co. changed its name as GREENICS.
October 2016 : GREENICS made a contract with Heinz Walz GmbH.