A composition of matter suitable for use as a road marking substance and a method thereof provides for the steps of mixing a binder mixture with a filler mixture, heating the mixed ingredients while mixing into a homogenous molten mixture and then extruding the molten mixture. A first switching element and a second switching element are serially connected to opposite output ends of a full-wave rectifier rectifying an AC voltage from an AC power source. The filter is in fluid communication with the module inlet and the module outlet.