Petrogen Oxy-Gasoline Cutting Torch System is the original torch using liquid gasoline as the fuel. Made since 1973, Petrogen is approved by the U.S. Dept. of Energy, Underwriters Laboratories, U.S. Coast Guard and Navy and Mine Safety and Health Administration. Petrogen is used by over 1,500 fire departments and Urban Search and Rescue units in the U.S. Petrogen backs its products with a lifetime warranty against defects in materials or workmanship.Petrogen is manufactured in Colorado Springs, Colorado, U.S.A.