... factories, especially suitable for the crushing of limestone, dolomite, page rock, gypsum mine, Ying stone, coal gangue and ... cement raw materials and brought a decrease of 1 / 3 of investment in equipment, a save of 1 / ... and energy-saving.2. Stable performance and high efficiency.3. Average particle size and high crushing ratio.4. ... machine from Weifang Longji Building Materials Equipment Co.,Ltd