... 3.sufface mat 4.battery separator mat 5.facing mat S-BM Surface TissueFiberglass Surface Tissue is mainly used for glass surface ... is divided into wrap type S-BM (w) series, hand lay-up-type S-BM (H) series,and pultrusion-type S-BM (P) series of three ... adjustable, smooth surface layer 5, Good anti-aging, corrosion resistance S-BM fiberglass surface tissue for FRP products