History
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Started the manufacture of NTK techinical ceramics. Listed on both Tokyo and Nagoya stock exchanges.
Started the manufacture of ceramic cutting tools and inserts. Started the manufacture of copper-cored wide range spark plugs. Became a pioneer product in the automobile industry.
Established NITTOKU SEISAKUSHO CO., LTD.
Established NGK SPARK PLUGS (U.S.A.), INC. (Sales company)
Started the manufacture of temperature sensors for automobile.
Established NTK CERAMICS (U.S.A.), INC. (Ceramic manufacturing company)
Established CERAMIC SENSOR CO., LTD.
Total number of production of NGK spark plugs exceeded 5 billion units.
Established NGK SPARK PLUGS (U.S.A.) HOLDING, INC.
Started the manufacture of oxygen concentrator for home oxygen therapy.
Started the manufacture of new high temperature ceramic glow plugs.
Acquired 100% ownership of NIHON CERATEC CO., LTD.
Acquisition of all the share relating to WELLS vehicle electronics business.