Sep. 1981	Spun off the microfilm business department from Sanno Shoji Co., Ltd. and established Sanno Information Industry Co., Ltd.
Nov. 1986	Started specified dispatching undertaking.
Jan. 1989	Absorbed patent department from Sanno Shoji Co., Ltd.
	Started dispatching of design engineer.
Sep. 1989	Changed company name to Sanno Tec Co., Ltd and increased the capital to 40 million yen.
Apr. 1990	Established Tochigi branch office (current East Japan office)
Sep. 1994	Relocated head office to current address (2-3-7 Chuo, Wako-shi, Saitama)
May 1995	Started sales operation of separate-smoking system.
Feb. 2004	Started DPM consignment business.
Apr. 2007	Shinichi Sakamoto assumed the position of president.
Dec. 2013	Established East Japan office Suzuka branch
Sep. 2014	Rebuild East Japan office
Dec. 2016	Acquire Eco Action21 Certification
Apr. 2016	Shinichi Sakamoto resigned from the position of President & CEO, and was appointed as Chairman of the Board of Directors. Isamu Yoshioka was appointed as President & CEO.