Quantum Fuel Systems Technologies Worldwide, Inc. is engaged in the development and production of compressed natural gas (CNG) fuel storage tanks and packaged fuel storage systems and in the integration of vehicle system technologies, including engine and vehicle control systems and drivetrains. The Company operates through Fuel Storage & Systems and Corporate segments. It produces CNG storage tanks and fully-integrated natural gas storage systems to truck and automotive original equipment manufacturers (OEM) and aftermarket and OEM truck integrators. Its products include high pressure gaseous fuel tanks, packaged fuel system modules, gaseous fuel electronic vehicle control systems and software, and other. The Company also offers services, including fuel storage and system design and validation, testing and validation, certification and compliance, production engineering and manufacturing process development, vehicle level assembly, training, and service and warranty.