| 1944 |
埼玉県入間郡東金子村（現入間市）に工場疎開。 |
| 1944 |
Moved to Iruma city |
| 1944 |
Sugiyama family in front of the house. |
| 1946 |
(資)杉山製作所に改組。自転車用チェーン製造販売を手がける。 |
| 1946 |
Changed the company name to Sugiyama Manufacturing limited to make tools for civil use instead of military use. |
| 1947 |
モーターサイクルチェン 当時のカタログ表紙 |
| 1947 |
Motorcycle Chain |
| 1950 |
この頃から動力用ローラーチェーン製造開始。 |
| 1950 |
Started to make transmission roller chains. |
| 1956 |
(株)杉山チエン製作所に改組(資本金二百万円) |
| 1956 |
Changed the name to Sugiyama Chain Co., Ltd. with capital 2 million yen. |
| 1957 |
埼玉県入間郡武蔵町（現入間市）小谷田に新工場建設。自転車用チェーンの日本工業標準規格（JIS）の表示工場となる。 |
| 1957 |
Established a new factory in Koyata, Iruma city. |
| 1957 |
Registered as JIS (Japan Industrial Standard) factory for a bicycle chain manufacturer. |
| 1958 |
社員旅行（伊香保温泉) |
| 1958 |
Company trip to Ikaho Hot Spring, Gumma prefecture. |
| 1959 |
動力用ローラーチェーンの日本工業標準規格（JIS）の表示工場となる。杉山定太郎が新設の武蔵ロータリークラブのチャーターメンバーとなる。 |
| 1959 |
Registered as JIS factory for a manufacturer of transmission roller chain. |
| 1959 |
Sadataro SUGIYAMA became a charter member of a newly founded Musashi Rotary Club. |
| 1962 |
武蔵屋扇町屋に2,300坪、従業員200人を超える工場新設。 |
| 1962 |
Established another new factory in Ohgi-machiya, Iruma city, with a size of 7,600 square meters, with more than 200 employees. |
| 1963 |
資本金840万円に増資。杉山定太郎が武蔵町法人会会長となる。 |
| 1963 |
Capital increased to 8.4 million yen. |
| 1963 |
Company trip to Shimoda Hot Spring, Shizuoka prefecture. |
| 1964 |
杉山定太郎が武蔵（現入間）ロータリークラブ会長となる。 |
| 1964 |
サイレントチェン |
| 1964 |
Sadataro SUGIYAMA became a chairman of Musashi Rotary Club (present Iruma Rotary Club). |
| 1965 |
杉山定太郎が渡米。エバンストン（イリノイ州）の国際ロータリークラブ事務局訪問。海外輸出始まる。 |
| 1965 |
Sadataro SUGIYAMA visited the International Rotary Club in Evanston, Illinois, USA. |
| 1965 |
Started exports of roller chains to the USA. |
| 1966 |
杉山定太郎が日本チェーン工業会理事就任。 |
| 1966 |
Sadataro SUGIYAMA became a board member of Japan Chain Association. |
| 1966 |
Started publishing company newsletter “SY”. |
| 1966 |
Bought land for another new factory in Musashi Industrial Park, with a size of 14,000 square meters. (present headquarters and factory). |
| 1967 |
入間市狭山ヶ原の武蔵工業団地に5000坪の工業用地取得。新鋭工場の建設に着手。 |
| 1967 |
本社工場地鎮祭 |
| 1967 |
社内報「SYだより」創刊。 |
| 1968 |
入間市に生産工場を有する事業場30数社を持って(任)入間市工業会を設立。 |
| 1968 |
保育園（工場敷地内） |
| 1968 |
社員旅行（下田温泉) |
| 1968 |
Sadataro SUGIYAMA founded the Iruma Manufacturers Association with more than 30 companies and led it as chairman for many years. |
| 1968 |
He constructed a company kindergarten that was a cutting-edge attempt to employ more part-timers. |
| 1970 |
資本金を4,950万円に増資。 |
| 1970 |
Capital increased to 49.5 million yen. |
| 1971 |
アメリカ・ヨーロッパの販売部門訪問。 |
| 1971 |
Sadataro SUGIYAMA visited American and European distributors. |
| 1973 |
本社を完成した武蔵工業団地内の工場に移転集約化を図る。同時にコンピューター導入により総合生産管理開始。 |
| 1973 |
Completed the New factory in the Musashi Industrial Park. |
| 1973 |
New computer system was introduced. |
| 1974 |
溶接チェン |
| 1974 |
Welded Chain. |
| 1975 |
トレンチャーチェン |
| 1975 |
Trencher Chain. |
| 1978 |
アメリカ・ニュージャージー州に販売拠点設立。 |
| 1978 |
Acquired shares and created a partnership with HKK Chain Corporation of America in New Jersey, USA. |
| 1980 |
鍛造チェン |
| 1980 |
Rivet less Chain. |
| 1983 |
対米直接貿易開始。 |
| 1983 |
Started “direct” exports of roller chains to the USA. |
| 1986 |
日立金属と販売提携開始。資本金9,900万円に増資。 |
| 1986 |
Started sales agreement with Hitachi Metals. |
| 1986 |
Capital increased to 99 million yen. |
| 1987 |
杉山定太郎社長が春の叙勲で勲五等双光旭日章受章。新技術開発による超高級ローラーチェーン(SBR)の製造開始（世界初）。 |
| 1987 |
SBR® チェーン |
| 1987 |
Succeeded in developing “Solid Bushing & Roller”, our super‑high quality roller chain with new technology for the first time in the world market. |
| 1987 |
Sadataro SUGIYAMA was awarded the 5th Class, Gold and Silver Rays from the Emperor in 1987 at the age of 76. |
| 1995 |
豊岡工場を本社工場に統合。 |
| 1995 |
Headquarters and factory was moved to the present address in Musashi Industrial Park, Iruma city. |
| 2000 |
品質マネジメントシステムISO9001の認証取得。 |
| 2000 |
Obtained the certificate of ISO9001. |
| 2002 |
Sliver SBR® チェーン |
| 2002 |
Silver SBR® Chain. |
| 2005 |
APIモノグラム認証取得 |
| 2005 |
Obtained the certificate of API (American Petroleum Institute). |
| 2009 |
Premium SBR® チェーン |
| 2009 |
Premium SBR® Chain. |
| 2009 |
Shinichiro SUGIYAMA became the chairman of the Iruma Manufacturers Association. (incumbent chairman) |
| 2010 |
多摩信用金庫より、優れた技術や製品等により地域経済の発展に貢献したことで「多摩ブルー賞」技術製品部門優秀賞を受賞。 |
| 2010 |
Shinichiro SUGIYAMA became the chairman of Sugiyama Chain, and Yuichi SUGIYAMA became the president. |
| 2017 |
Aqua-Proof® チェーン |
| 2017 |
Aqua-Proof® Chain. |
