also established in Kitakyushu. The company also operates three sales offices within Japan, in Tokyo, Nagoya, and Osaka. The HKS headquarters remains near Mount Fuji with its main 100,000 square foot manufacturing and R&D facility in Fujinomiya City, Shizuoka Prefecture with an international sales and distribution network spanning Asia, Europe, Australia and the Americas to support its customer base. The subsidiary HKS USA was originally established in 1982 but shut down operations in 2011, with HKS electing instead to use wholesale distributors to handle their supply chain in the USA. Motovicity Distribution was selected as the North American master distributor in 2011. HKS USA was reestablished in 2017 as the consolidated subsidiary HKS USA, Inc. in Chandler, Arizona. In May 2020, Motovicity Distribution's assets were acquired by Turn 14 Distribution for authorized distribution of HKS's products in the United States. Additional subsidiary companies have been established in Cambridgeshire, England (HKS Europe) in 1996, Bangkok, Thailand (HKS Thailand) in 2001, and Shanghai, China (HKS Shanghai) in 2012. Since June 1999, HKS has been a publicly traded company, first with the Japan Securities Dealers Association, and later in 2004 on the JASDAQ Securities Exchange. HKS also gained full ownership of the metal processing and manufacturing company Nissei Kogyo Co., Ltd. in May, 2000. Nissei Industries also produces crankshafts, camshafts, cylinders, pistons, and injector parts. Products Automotive aftermarket HKS offers Japanese domestic model cars a wide variety of aftermarket parts ranging from engine internals such as connecting rods and camshafts to external parts such as blowoff valves, intercooler kits, full exhaust systems, turbo kits, engine management systems and other performance electronics. Current automotive product lines Exhaust Suspension Intake Carbon fiber Electronics Blow off valve Cooling Turbocharger Supercharger Fuel Engine internals Drivetrain Brake system Oil Spark plugs Support parts Aero Tools Nano cabin filter Goods Other products HKS also manufactures OEM parts to automakers from technologies developed in aftermarket tuning, and even in usage such as marine jets. The company also undertakes contract manufacturing for clients utilizing their extensive R&D and manufacturing facilities. HKS received the ISO 9001 quality management standard certification in 2010, assuring quality in manufacturing standards for OEM and contract clients. Additionally, the company has a division for compressed natural gas engineering, as well as bi-fuel systems that run on both gasoline and compressed natural gas. These systems are designed for usage in commercial trucks as well as road vehicles. The