This product is made of high level masking paper, and is used together with PE handle. It is specially used in dust clean of manufacturing procedures such as semi-conductor, PCB and so forth. Especially for inner cleaning of the oven in the manufacturing procedure of PCB, it has outstanding result, and as for the cloth hard to clean, it is also applicable. This product is specially designed with saw-tooth release mouth so that it can be used easily and conveniently. Functions of the Product Good stickiness, good holding ability,good clearance of impurity in depression and no incomplete glue. Be applicable to the cleaning of working procedures such as PCB, FPCB dry film,video transfer,joint and press combination etc. Be applicable to the cleaning of pre-working procedures of LCD polarizer, glass making and so forth.