Smoke sheet rubber, flake, yellow and black, is one of the raw materials for making high-end tires, with good ductility and wear resistance, the first choice of high-end tire materials.Smoke sheet is also known as smoke sheet glue and smoke film, referred to as RSS, natural rubber products. The raw rubber sheet made of rubber latex obtained from rubber tree after condensation and rolling is dried by tree smoke, which is the most important and largest variety of natural rubber. It has a slight smoky smell and an amber color. Slightly transparent, density 0.90-0.93. The white whey flowing down the three-leaf rubber tree is coagulated, laminated and dried. Dried by smoke is called smoke sheet glue