NGK
From Wikipedia, the free encyclopedia
NGK Spark Plug Co., Ltd. (日本特殊陶業株式会社 Nippon Tokusyu Tōgyō Kabushiki-gaisha?) (TYO: 5334 ) is a Public Company established in 1936 involved in the manufacturing and selling spark plugs and related products for internal-combustion engines and new ceramics and applicable products.