... oxide, bauxite, causticity sodium, charcoal, clay ,braize ,coal, cryolite, chemical fertilizer, plastic, lime stone, pigment, urea, etc. 2,Ball Forming Machines ... working Principle This series of type pressure machine will pass the power on to the two pressure roller ... so on; Modle no.: 2 roller;We will test the machine at workshop with customer, until let customer satisfied; 4, ...