1)It is made by a waste tire. 2)It is used in manmade lawn,racetrack of playground. Black Waste Tire Rubber Granularity:1)Specification:0.5mm to 1mm,1mm to 2mm,2mm to 3mm1,Usage:in man-made lawn,racetrack of playground.2)It is made by a waste tire.3,Manufacturing Method:The machine separatesthe steel scrap from the rubber to make fine rubber powder under airtight condition.