... 3. Experting Technical Guide is Provided 4. One Year Guarantee 2013 Newest Product Powder Ball Press Machine High Efficiency And Good Quality ... .the raw material applied this machine is coal, iron, coke, aluminum powder, iron oxide skin, slag, gypsum, tailings, sludge, kaolin, ... us now,We are looking forward to cooperation with you 2013 Newest Product Powder Ball Press Machine High Efficiency And Good ...