White Corundum Al2O3%>99 Grinding ability, heat a small high efficiency acid and alkali corrosion 1.Xinmi Jinding keep warm refractory co.,ltd ... , gunning refractory and fabricate parts ect. It also can be used to kinds of corundum products, such as corundum bricks, corundum, mullite corundum, refining corundum perforated ... you have any problems,just feel free to contact us. refractory white corundum