We are offering jis insulating brick with:1.lower content in iron, alkaline and impurities, 2.good high temperature propertiesfeatures:the series of our products are made according to the standard of japanese jis insulating refractory bricks. Physical and chemical properties both reach or surpass the japanese standard. The products arc exporting to korea, japan, russia, and southeast asia etc. applaction: high temperature furnace or stove.