... Highly reliable 3,Reduce raw material loss 4,High mixing precision 1,This machine can produce hard,semi-hard or soft ... cooler board,etc.2,Product characteristics:* A Computer control device selects the material output time and cleaning time,it is ... mixing ratio control.*At the same time the machine can produce two different PU products,for example(PET/polyther) polyurethane four-component foaming ...