| 1946 |
Established Sanwa Kogyo Co., Ltd. in Kotoni-cho of Sapporo city, Hokkaido with capital of 95,000 yen funded by 10 people including Eisaku Emori, Shojiro Takano, Hiroshi Emori and Fumiki Shiroishi. : Eisaku Emori became a director. : Started development of wood moisture tester and lumber metal detector. : Established the Tokyo office in Kita-shinbori-cho in Nihonbashi of Chuo-ku, Tokyo and the laboratory in Zushimachi, Kanagawa. |
| 1947 |
Developed wood moisture tester “M-1 type” and delivered 20 mass-production products to Hokkaido government. : The trademark is named as “KETT” that is derived from the first letters of the family names of Satoshi Kiyohara, Eisaku Emori, Shojiro Takano and Siro Tawada. |
| 1949 |
Changed the company name to Sanwa Denki Kagaku Kenkyujo. : Received a subsidy for development and research of wood moisture testers from Hokkaido government. |
| 1950 |
Developed : rice and wheat moisture analyzer “P-1” : . Delivered the first product to the Muroran food agency office. |
| 1953 |
Developed : electromagnetic coating thickness tester “L-1” : and : infrared moisture analyzer “F-1” : . “Super-high electrical resistivity measurement method” of wood moisture tester as our first patent received the achievement award from the Japan Institute of Invention and Innovation. |
| 1955 |
Built new office building in Minami-shinagawa of Shanagawa-ku, Tokyo. : Set the Tokyo office as the HQ and converted the Sapporo HQ to the Sapporo office. Increased the capital to 2,000,000 yen. : Started our first large export of : grain moisture tester “P-4” : to Taiwan. |
| 1956 |
Rice and wheat moisture analyzer “PB-1” : was officially employed by the Food Agency and our first mass-production started. |
| 1958 |
Built new company building in Minami-magome of Shinagawa-ku, Tokyo as new HQ. : Established the Osaka office in Fukushima-ku of Osaka city. Increased the capital to 4,000,000 yen. |
| 1961 |
Changed the company name to the KETT Electric Laboratory. Increased the capital to 20,000,000 yen. : Released : rice and wheat moisture analyzer “Riceter” : . |
| 1962 |
Released : leaf tobacco moisture analyzer “TA-1” : , coating thickness tester “L-2B” and high-frequency coating thickness tester “HL-1”. |
| 1966 |
Released : inspection meter “D-4A” : , : rice and wheat moisture analyzer for producer “SP-1” : and gas-type moisture analyzer “U-1”. |
| 1968 |
Completed the extension and structural alteration of the HQ building : . Increased the capital to 32,000,000 yen. |
| 1970 |
High-frequency rice moisture analyzer PH-70 “Wadi” : , : compact rice polishing machine “Parlor” : , rice and wheat moisture analyzer “Riceter 2”, coating thickness tester “VL-30. |
| 1973 |
Established the Osaka office in Higashi-yodogawa-ku of Osaka city. Established the Hiroshima office in Nishi-ku of Hiroshima city. Increased the capital to 48,000,000 yen. |
| 1975 |
Released : coating thickness tester LM-5 “Basic” : , : grain moisture tester “Dizer” : . |
| 1977 |
Increased the capital to 72,000,000 yen. Established branch offices in Kanazawa, Niigata, Fukuoka, Sendai and Akita. |
| 1980 |
Released : rice and wheat moisture analyzer “Riceter D” : , “Riceter L”, : wood moisture tester “Turke” : and grain moisture tester “PM-600”. |
| 1985 |
Released : infrared moisture analyzer “FD-220” : , adipometer “F-5000”, rice and wheat moisture analyzer “Riceter E” and : coating thickness tester ”L-200” : . |
| 1987 |
The founder Eisaku Emori died. Received the Fifth Class Order of the Sacred Treasure. |
| 1990 |
Released infrared moisture analyzer “FD-600”, : coating thickness tester “L-900” : ”, : On-Line Moisture Analyzer “FG-100” : , rice and wheat moisture analyzer “Riceter E”. |
| 1996 |
Celebrated the 50th anniversary. Released infrared moisture analyzer “FD-240”, grain moisture tester “PM-400” and wireless coating thickness tester “L-300W”. |
| 1998 |
Technical center in building 2 across from the HQ building was completed. Acquired ISO9001. |
| 2000-04 |
Released rice and wheat moisture tester “Riceter m”, concrete and mortar moisture tester “HI-520” and infrared moisture analyzer “FD-720”. |
| 2005-09 |
Released single-grain rice inspector “RN-600”, coating thickness tester “LZ-990”, paper moisture tester “HK-300” and rice and wheat moisture analyzer “Riceter f”. |
| 2010-11 |
Released dried noodle moisture analyzer “HB-400”, glass rate meter “RN-840”, unpolished/polished rice whiteness meter “C-600”. |
| 2012 |
Released coating thickness tester “L-373”, road bridge floor system moisture analyzer “HI-100”, soba moisture analyzer “PM-630” and iPad app for field crop inspection standard. |
| 2014 |
Released infrared moisture analyzer “FD-660”, grain moisture tester “PM-650” and near-infrared moisture analyzer “KB-30”. |
| 2016 |
Celebrated the 70th anniversary. Released composition analyser “AN-920”. |
| 2017 |
Released renewed rice and wheat moisture analyzer “Ricester f”, compact rice mill “Pearlest” and near-infrared moisture analyzer “KB-230”. |
