Sony Chemical Corporation, Kanuma Plant DNV OHSMS standard September Sony Manufacturing Company UK Bridgend Plant ISA2000 February 1999 Sony Corporation, Sendai Technology Center JACO OHSMS standard April 1999 Sony Manufacturing Company UK Bridgend Plant OHSAS18001 October 1999 Sony Display Device (Singapore) OHSAS18001 October 1999 Sony Fukushima Co., Motomiya Plant JACO OHSMS standard December 1999 Sony EMCS Corporation, Kohda TEC JACO OHSMS standard March 2000 Sony Chemical Corporation, Kanuma Plant OHSAS18001 March 2000 Sony Chemicals Corporation Singapore Pte.