Slide Gate Plate, Porous Plug, Tundish Nozzle manufacturer / supplier in China, offering Refractory Deep Burned Porous Bricks for Production of Purge Plug, Cr2o3 Porous Block for Purge Plug Production in Steel Ladle, High-Quality Sintered Porous Brick Used for Purge Plug in Steel Ladle and so on.