The XMG-80 Marble Gang Saw is our technology intensive product with advanced programmable logic controller and is fully automatic. 1)there are two crank-links to transform the main motor's power into the saw frame's movement. It is more stable than there is only one crank-link. 2)the main motor is a high efficiency energy-saving motor. It can work in full duty for a long time. 3)the advanced saw frame guiding mechanism enables the saw frame to run in constant stable state. Its guiding precision and movement stability is up to international standard. 4)the bearings and other main parts are all of high quality material to ensure a long service life and excellent performance comparable to those of italian gang saws. Seaworthy packing