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Tokyo roki oil filters5/2/2023 Thai Amata Plant (Tokyo Roki (Thailand) Co., Ltd.) was completed. 3 Plant (at Sagamihara-shi, Kanagawa-ken) was completed. We obtained ISO9001 management system certification (JQA-QMA12983) from Japan Quality Assurance Organization. 2 Plant (at Sagamihara-shi, Kanagawa-ken) was completed to start manufacturing plastic intake manifold (LCI). 2 Research Center (at Sagamihara-shi, Kanagawa-ken) was completed. New Sagami Plant (at Sagamihara-shi, Kanagawa-ken) started full-scale commercial operations. New Sagami Plant and the Sagami Research Center were completed (at Sagamihara-shi, Kanagawa-ken) to start manufacturing EGR Coolers. The new Headquarters and Research Center were completed (at Tsuzuki-ku, Yokohama-shi), and Headquarters was relocated there from Shin-yokohama. The TIS (integrated group-wide online network system) started full-scale operations. Systems for computational structural analysis were introduced. Yokohama Plant was opened, making it a center for developing parts for special equipment and products. The Technical Center was relocated to the Headquarters building. The Headquarters was moved to a new Headquarters building at Shin-yokohama (in Minatokita-ku,Yokohama-shi). Toner filter elements for dry reproducing machines were developed. Otsuki Plant was completed to start manufacturing air cleaners. Hamamatsu Plant was completed (currently Tokyo Roki Nagura Seisakusho Co., Ltd.) and mass-production systems for cartridge filters were established there. The Tokyo Roki Technical Center was opened as the largest filter-related research center in Japan. Sagami Plant (in Kanagawa-ken) was completed to start manufacturing oil coolers. Hiroshima Plant was completed (in Hiroshima-ken) to start manufacturing air cleaners. The demonstration running tests with actual vehicles of exhaust-gas purging mufflers were started. Kusatsu Plant was completed (in Shiga-ken) to start commercial production of air cleaners. Yokohama Plant started commercial production of new-concept “throw-away type cartridge filters”. Yokohama Plant was completed, production systems for elements were established, and platinum-catalyst purging mufflers for diesel engines were developed.Įight offices/plants were in operation nationwide IBM computers were introduced to start computer-processing of office processing. Local offices were opened at Nagoya, Osaka and Hiroshima. Manufacturing of mufflers for internal combustion engines was started. Various filters for airplanes passed approval tests by the Self-defense Agency of Japan. The Headquarters building and Kawasaki Plant were completed at Ichinotsubo, Kawasaki-shi, and business operations were relocated there. The engineering department was organized to start developing filter papers. was established (at Denen-chofu, Ota-ku, Tokyo) to start manufacturing and selling air cleaners and oil filters for internal combustion engines. (Crankcase Ventilation, Oil Mist Separator)Įmbracing New Change with Wisdom and Enthusiasm 1949 Mar.
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