Rubber sheet used in a wide range of smoke wind industry vary according to the purity of the tires. Split grade rubber sheet by using major recognition by sight, and may have different standards. Production process starts from Kahn to keep rubber sheets to the wind, smoke. Cleaned and then put them into the oven to finish the wind smoke a rubber hood and more clear to me. It can be classified into five grades according to their standards. purity of color and flexible rubber. Finished processing the sheets will be in the form of a Bell is a jury that is painted with white powder and overwrite the transport seals.