... )It is used in manmade lawn,racetrack of playground. Black Waste Tire Rubber Granularity:1)Specification:0.5mm to 1mm,1mm to ... 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. Waste Tire Rubber Crumb