... waste,hard waste,denim clips and other cotton waste. This machine is the opener with automatic backing system. It is superior ... /m,1580/r/m5,dust baskate 500mm6,press cotton pack 140*9.857,fan machine 1.5KW*2900r/m8,chain 19.5mm9 ... .8inch 1.65m×3.5teeth×8.5inch GM550 or GM400 opening machine