Taisei Equipment Co., Ltd.

Taisei Equipment Co., Ltd. was established as Kōun Equipment Construction Co., Ltd. on April 1, 1965, in Hirakawa-cho, Chiyoda-ku.

In December 1965, the head office was relocated to Seiwa Building in Nishi-Shinjuku, Shinjuku-ku.

In February 1968, the company name was changed to Taisei Equipment Co., Ltd.

In August 1986, the head office was relocated to TK Building in Kabukicho, Shinjuku-ku.

In February 1998, the Tokyo branch obtained ISO9002:1994/JIS Z 9002:1994.

In March 2000, the Kinki branch obtained ISO9002:1994/JIS Z 9002:1998.

In July 2001, the head office was relocated to Fuji Estate Shinjuku Daiichi Building in Nishi-Shinjuku, Shinjuku-ku.

In January 2002, the Kyushu branch obtained JIS Q 9001:2000/ISO9001:2000 (excluding design and development).

In February and March 2003, 12 branches nationwide were divided into 3 blocks, each obtaining JIS Q 9001:2000 (ISO9001:2000).

In February and March 2006, the headquarters technical design department, technical and quality control department, and the North Japan, Kanto, and West Japan blocks obtained JIS Q 9001:2000 (ISO9001:2000).

In January 2007, the entire company re-acquired JIS Q 9001:2000 (ISO 9001:2000).

In February 2009, the entire company acquired JIS Q 14001:2004 (ISO 14001:2004).

In May 2011, the head office and Tokyo branch relocated to Shinjuku Oak Tower in Nishi-Shinjuku, Shinjuku-ku.

In April 2014, the head office and Tokyo branch relocated to Shinjuku Sumitomo Building in Nishi-Shinjuku, Shinjuku-ku.

In January 2018, the entire company re-certified and transitioned to JIS Q 9001:2015 (ISO 9001:2015) and JIS Q 14001:2015 (ISO 14001:2015).

In January 2019, the entire company maintained certification for JIS Q 9001:2015 (ISO 9001:2015) and JIS Q 14001:2015 (ISO 14001:2015).