Zhengzhou Zhengtong Abrasive Import&Export Co., Ltd is exporter of blasting media ceramic beads, brown fused alumina, black fused alumina, white fused alumina & grinding media zirconia beads,
Black Aluminum oxide blasting media F12#-400# Al2O3 62% Min. Black aluminum oxide, also known as low-aluminum corundum, is a black gray crystal with ...