On September 20, 2019, QF Liquidation, Inc. went out of business as per its Chapter 11 liquidation filing under bankruptcy. QF Liquidation, Inc. develops, produces, and sells compressed natural gas fuel storage tanks and packaged fuel storage systems for heavy, medium, and light-duty trucks; and passenger vehicles in the United States, Canada, Germany, Australia, India, the United Kingdom, Spain, and Taiwan. Its products include high pressure gaseous fuel tanks, packaged fuel system modules, gaseous fuel electronic vehicle control systems and software, hybrid control and motor control software systems, inverters and motors, and engines/generators and fuel cell power. The company also designs, develops, engineers, and validates fuel storage systems for natural gas vehicle applications ranging from passenger vehicles to heavy duty trucks; and integrates electric motors, inverters, generators, and electronic vehicle control components into hybrid and plug-in electric vehicles. In addition, it provides component, subsystem, and system testing and validation services; certification and compliance; and production engineering and manufacturing process development services. Further, the company offers vehicle level assembly services; technical training services; and service procedures, diagnostics, tools, and repair/maintenance programs for original equipment manufacturers (OEMs). Its customers include OEMs, aftermarket and OEM truck integrators, fleets, material science companies, and other governmental entities and agencies. The company, formerly known as Quantum Fuel Systems Technologies Worldwide, Inc., was founded in 2000 and is headquartered in Lake Forest, California.