Langfang Zhiyuan refractory to introduce energy-saving materials Europe Ltd. large pendulum of rockwool automatic production lines. Board effective curing line length is 25 meters, using water-cyclone dust desulfurization process, producing 50,000 tons rockwool products. Products include high density rockwool board (150-400kg kg / m 3) special specifications rockwool plate. medium density rockwool board (100-150kg kg / m 3). density rockwool insulation color-coated steel sandwich plate. company as a new R & D QY - hydrophobic type of rockwool products with ultra-fine quality, low residue content of the ball, small thermal conductivity, chloride content of less than 23 ppm. products has been the national patent applications.