Fremont Lancaster's Chinese division is the only foreign company to possess the Department of Transportation special permit required to package pressurized difluoroethane (152A) into cans that can be sold in the US market. <br/><br/>Our 152A Dusters are produced in China, but meet all the regulations of the United States Department of Transportation. This offers buyers huge savings, either over US manufactured cans or the fines imposed for importing illegal Chinese cans.