History
| 1894 | Managing the foundation spinning industry |
| 1920 | Management of cocoon silk wholesale store |
| 1934 | Mitsui & Co., Ltd., and Toyo Rayon distributor and started selling silk threads |
| 1943 | Merger of Hingxin Industry and Kuroshitsu Fiber Goodwill due to maintenance of the company during the war Delivery of parts to the Toyokawa Navy Arsenal |
| November 1948 | Company sale Silk thread, person silk thread, spun yarn, synthetic yarn and various fabrics are sold |
| 1958 | Toyota Motor Sales Co., Ltd. (present: Toyota Motor Corporation), Start selling to Hino Motors Sales Co., Ltd. (present: Hino Motors Co., Ltd.) |
| April 1968 | Start selling to Daihatsu Industries, Ltd. |
| December 1978 | Company name changed from Yamamoto Shoten Corporation to Sunshoow Co., Ltd. |
| August 1955 | Distribution division as Swan Logistics Center Co., Ltd. Isolated |
| April 1989 | Capital increase through new capital of 110 million yen Introduction of CAD / CAM system |
| May 1989 | Started production of seat cover in Thailand |
| November 1994 | Sales began to Volkswagen Audi Japan Ltd. (present: Volkswagen Group Japan Co., Ltd.) |
| September 1995 | Start selling to Auto Remessa Co., Ltd. (currently: Suzuki Business Co., Ltd.) |
| December 1996 | Established "Suntech", a joint venture for production and sales in Thailand |
| October 1997 | Started selling to Mazda Accessory Service Co., Ltd. |
| April 1998 | Joined Kyokuto |
| April 1998 | Start selling to Subaru supplies |
| September 1999 | Sales began to I-C-L Inc. |
| May 2000 | Monster International Corporation launched sales |
| July 2004 | Acquired ISO 14001 "Environmental Management System" certification |
| May 2005 | Began sales to Honda Access Co., Ltd. |
| December 2005 | Start selling to Nissan Motor Co., Ltd. |
| January 2007 | Start selling to Suzuki Co., Ltd. |
| April 2009 | Headquarters moved from Toyohashi to Hamamatsu |
| May 2013 | Start selling to Mitsubishi Motors Corporation |
| April 2017 | Start business in a new office building |