... Wood, Marble, Stone,etc Sander Paper Aluminium OxideJZsander is short for Chongqing Jiazhuang Environmental Protection Tech. Co., Ltd, the manufacturer of Back Pack ... a good market potentiality.We also supply sand papers, sand paper grits range is rather wide, from 16# to 1000# ... Kindly Reminder:As for the drywall sanding, sand paper grits chosen below is for your reference16# , 36# , 40# , ...