supply ladle gunning, low-cement, ultralow-cement and cement free castables,tundish impact pad and skimmer block,pure magnesia.. Sino-win international trade(dalian)co.,ltd, is a professional trade company trade in fireproof stuff.we have our own big factory, we can supply: electric fused magnesite, Mgo>=98%, Mgo>=97.5%,fused magnesia chrone sinter,dead burned magnesite,high pure magnesia, ...