... track, Multipurpose field . Agreements: International SpecificationsIAAF test report & certificated is under processSport SpecificationsGB/T14833-1993Environmental compatibilityHeavy metal content test & MSDSAttach Test ... strength, Mpa≥0.40.73Elongation at break,%≥4055Flame retardancy , level11 Athletic Polyurethane running track & sport field