一级黄毛片,国产高清精品一级毛片,国产精品电影一区二区,亚洲综合日韩在线亚洲欧美专区,国产亚洲婷婷香蕉久久精品,国产女同一区二区三区五区

Also known bopp tape sealing tape, packing tape, it is BOPP biaxially oriented polypropylene film to the substrate, after heated evenly PSA emulsion, to form 8 & mu; m ---- 28 & mu; m ranging from layer to form BOPP tape mother volume, light industry enterprises, companies, individuals can not live without supplies, the state does not have a perfect tape industry standard, only an industry standard "QB / T 2422-1998 "after sealing the pressure sensitive adhesive tape with BOPP BOPP film through the original high-voltage corona treatment, the side surface roughness in the glue on the top, first forming tape parent roll, and then cut into by slitting machine specifications do not and other small volume that we use every day a tape. PSA emulsion, the main ingredient is butyl