Last Update: 2015/04/14 (Certification range: Isahaya factory) Obtained ISO9001 certification 2006/1/6 What's New April 14, 2015 The homepage has been updated. October 15, 2014 We exhibited abrasive grain tool analysis equipment in Osaka and Fukuoka. September 01, 2014 Obtained a general worker dispatching business permit. May 01, 2014 We conducted a running test of an electric aircraft in Oita prefecture and succeeded. March 20, 2014 The dining room and changing room of the Isahaya factory have been renovated. May 20, 2013 We have strengthened the entrance and exit security of the Isahaya factory. June 07, 2011 We have updated the job listing. The contents of the job information have been updated. April 26, 2011 At the Isahaya Factory, the second factory and office building were expanded. December 01, 2010 As a member of the asteroid explorer "Hayabusa" project team, we received an award from the Minister of Space Development and the Minister of Education, Culture, Sports, Science and Technology. May 14, 2010 We have updated the job listing. The contents of the job information have been updated. April 07, 2009 We have updated the job listing. The contents of the job information have been updated. April 28, 2008 Tokyo sales office and Sagamihara sales office have been added to the company profile. February 16, 2008 We have updated the job information. An item has been added to the job information. October 05, 2006 This site has been renewed. February 20, 2006 We have acquired ISO9001 certification at the Isahaya factory. January 24, 2006 The new product "Oil Bath for School" is on sale. A must-have for temperature sensor calibration. January 24, 2006 We participated in "Robot / Related Industry Matching Fair 2006". We exhibited at the exhibition held from February 23rd to 24th. November 14, 2005 The materials used at the "56th International Astronautical Congress Fukuoka Convention" have been uploaded. October 22, 2005 We participated in the "56th International Astronautical Congress Fukuoka Convention". We participated in this tournament held in Fukuoka from October 16th to October 21st. March 10, 2005 This site has been renewed. March 09, 2005 We gave a presentation at "Nagasaki Industry Association 4th Technical Products". The materials presented at the presentation are available as PDF files. September 11, 2003 This site has been updated. July 02, 2003 Ryo Keiso Co., Ltd. official website has been opened. May 10, 2003 "Bon carry" is on sale. About personal information protection Information security policy Ryo Keiso Co., Ltd. Copyright (c) 2003'RYOKEISO' Corporation All Rights Reserved.