site map privacy policy What's New Contact Us October 2011 We carried out business integration. With the business integration of the Sanwa Group, our sales department was transferred to Sanwa Shutter Industry Co., Ltd. to specialize in the development and manufacturing business. July 2011 Delivery of airtight automatic doors (Hikari City, Yamaguchi Prefecture) April 2010 Explosion-proof type pneumatic automatic door delivery February 27, 2009 "Space Makeup F" was introduced on TV! !! You can see the corner video of the trend egg of TV TOKYO "World Business Satellite" broadcast on February 27, 2009 (Friday) . February 2, 2009 Information on the new product Space Makeup F has been posted. June 4, 2007 Showa Kensan's homepage has been renewed. July 5, 2004 Obtained permission from the Minister of Land, Infrastructure, Transport and Tourism (joint construction business). Product Information　|　 Construction example　|　 Maintenance / Service　|　 About us Copyright (C) 2007 SHOWA-KENSAN co., Ltd. All Rights Reserved.