●In 2005 Began OEM business of cleaning 300mm FOSB  
●In 2004 KEPZ factory obtained the certificate of ISO9001: (2000.ED)New customers--- TSM (Taiwan Semiconductor Manufacturing Co., Ltd. ) and Chartered Semiconductor Manufacturing
●In 2003 KEPZ factory completed construction and 200mm POD production line was installed. New customers---Grace Semiconductor Manufacturing Corp. and Semiconductor Manufacturing International Corp. were attracted.
●In 2002 KEPZ factory began construction  
●In 2001  Pod Industry Department of the company obtained the certificate of ISO International Quality Control system.
●In 2000 Mass production of 200mm SMIF Pods started and passed the Quality Verification of ProMOS Technologies Inc.
●In 1998 Engaged in R & D of 300mm SMIF FOUP
●In 1997  Engaged in R & D of 200mm SMIF Pods
●In 1995 E-SUN started industrial cooperation with Industrial Technology Research Institute Mechanical Industry Research Laboratories