Quantum Fuel Systems LLC is a leading manufacturer of compressed natural gas (CNG) and hydrogen fuel storage systems, trailers, and equipment. The company's innovative solutions include CNG and hydrogen storage tanks, fuel systems, and trailers designed for use in the transportation, industrial, and consumer markets. Quantum's products are engineered to provide safe, reliable, and efficient fuel storage and transportation, and are used in a variety of applications, including medium- and heavy-duty trucks, buses, cars, and construction equipment.