MPR Refractories Ltd. Manufactures Direct Bonded Magnesia Chrome Bricks. MPR Refractories Ltd. Is an ISO 9001:2008 certified company. MPR Refractories Ltd. Offers Slide Gate Plates, Collector Nozzles, Ladle Nozzles, Porous Plugs, Tundish Nozzles, Well Block for Porous Plugs, 90 K Mortar, 95 H Castable, Tundish Boards, Packing & Sealing Compounds, etc. The Direct Bonded Magnesia Chrome Bricks of model number MPR CR 58 find applications in Copper, glass, VOD and Zinc furnaces.