When it comes to spark plugs, NGK Spark Plugs is the World Leader. Makers of spark plugs for virtually every automotive, motorcycle, marine and small engine application, NGK dominates. Starting with a single product in 1936, NGK's extraordinary growth can be attributed to a philosophy of manufacturing the product where it is going to be used. In fact, a substantial number of NGK Spark Plugs and oxygen sensors sold in the United States are made right here in America. One of the benefits of this approach is the ability to work closely with manufacturers in developing products tailored specifically to their needs. The most tangible manifestations of the success of this philosophy have been the construction of fourteen factories in eight nations throughout the world, as well as NGK Spark Plugs being specified as original equipment by the majority of the world's auto manufacturers. Our commitment to excellence evolved into an ambitious research and development program through the years. As a result, at the core of superior spark plug technology, ceramics spawned the creation of NTK Technical Ceramics (http://www.ntktech.com/). The resulting products set new industry standards, including IC Packages, Piezoelectronics, Ceramic Filters, Fine Ceramics, and Ceramic Cutting Tools. That same commitment became the driving force in developing additional products such as NGK Wire Sets, NTK Oxygen Sensors, NTK Knock Sensors, and a variety of other NTK sensors (http://www.ngkntk.co.jp/). NGK's state-of-the-art products and technological advances have enabled the company to compete successfully in the automotive, electrical, computer, iron, steel, and other markets. As a result, NGK Spark Plugs and NTK are positioned to help their customers meet the technological challenges ahead.