September 2011 - December 2011
IRISO ELECTRONICS PHILS., INC.
SAGARA METRO PLASTICS INDUSTRIAL CORP. PLANT
January 2004 - October 2004
KYOCERA KINSEKI PHILIPPINES, INC.
February 1999 - July 1999
PHILIPPINE INTER ELECTRONICS CORP.
December 1997 - May 1998
TECHNOL EIGHT PHILS., INC.
April 2014 – December 2014
MATSUSHITA COMMUNICATION IND’L CORP. OF THE PHILS.
July 1997 - November 1997
OMRON MECHATRONICS
May 1997 - December 1997
SUBIC TECHNO PARK CORPORATION
December 1996 - May 1997
ITABASHI SEIKI PHILS., INC.
April 1995 - December 1995
UNIDEN PHILS., INC.
August 1994 - March 1995