... is angularity , the grit is gradually grinded to be round in use, its particularly suited for cleaning oxide skin, pre-treatment ... ratio. We have large production capacity, and we acquire raw materials from Chinese large size suppliers directly. These, coupled with our ... , and operator and workers’ health. Abrasive bearing steel grit made in China , skype:qt.1131 QQ:1742625742 Tel:008615966055683