棕(zong)(zong)(zong)剛玉(yu),金(jin)剛砂(sha)(sha),一級(ji)棕(zong)(zong)(zong)剛玉(yu),磨料(liao)(liao)級(ji)棕(zong)(zong)(zong)剛玉(yu)砂(sha)(sha),耐火(huo)級(ji)專(zhuan)用(yong)棕(zong)(zong)(zong)剛玉(yu)砂(sha)(sha),樹脂砂(sha)(sha)輪專(zhuan)用(yong)剛玉(yu)砂(sha)(sha),棕(zong)(zong)(zong)剛玉(yu)拋光砂(sha)(sha),棕(zong)(zong)(zong)剛玉(yu)高(gao)鋁(lv)雷蒙(meng)磨細粉,耐火(huo)材料(liao)(liao),引(yin)流砂(sha)(sha),冶金(jin)輔料(liao)(liao),金(jin)剛砂(sha)(sha),精煉(lian)鋼包(bao)包(bao)襯,冶金(jin)爐襯修料(liao)(liao),鋁(lv)鎂(mei)尖晶石(shi)澆注料(liao)(liao)