Longmen granulating machine series products are suitable for all kinds of thermoplastic general engineering plastics and modified engineering plastics cold strip granulating, such as ABS, PA, PBT, PC, PE, PET, POM, PP, PPS, PS, PVC, SAN, etc., including glass fiber reinforced and inorganic filled thermoplastic extrusion strip granulating.  It can be used with all kinds of medium and small single and twin screw extruder.  The strip is cooled by the cooling water tank, cooling conveyor belt, air knife or air channel and then enters the feeding port of the grain cutter. The strip is forced to be sent between the fixed knife and the moving knife by the traction roller to implement the introduction and cutting.