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USA Operations
Established in 1966 - NGK Spark Plugs (USA), Inc. was founded as a subsidiary of NGK Spark Plug Co, Ltd., of Japan.
NGK Spark Plugs (U.S.A), Inc. corporate headquarters was first located in California and then moved to its current location in Wixom, Michigan. NGK Spark Plugs (U.S.A), Inc. produces products from two manufacturing locations: one location in Irvine California, which produces Spark Plugs; and another location In Sissonville, WV which produces both spark plugs and Oxygen Sensors.
In early October 2008 NGK launched the Art of Fast project
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Organization
'NGK Spark Plug Co. LTD' is headquartered in Aichi Pref, Japan. Currently (March 2007) NGK employs 10,407 people worldwide.[1]
In 2007 NGK operates a network of 7 liaison offices, 12 sales offices, 13 production sites and 2 technical centers worldwide.[2] [2]
though it say made in the USA it is not an American company