July, 2010 Shifted to two Head Office system. (Osaka Head Office/Tokyo Head Office) December, 2009 Kyusyu Office moved to new office. July, 2008 Merged with SHOEIKINZOKU Co.,LTD. September, 2007 Set up SUMIKEISHO KUNSHAN METAL PRODUCTS Co.,LTD.
		ISO 9001 & ISO 14001 CERTIFICATION OBTAINED THROUGHOUT THE ENTER ORGANIZATION 　ISO14001:JP10/070975 　ISO14001:JP10/070976 　ISO9001:JP10/062130 　ISO9001:JP10/062131