... silicon carbide, glass sand and special non-slip material.Base: PVC, PET, non-toxic environmental protection PVC, PET, synthetic ... : white, kraft paper, silicone oil.(2) environmental non-toxic productsProducts for environmental protection non-toxic products, from raw ... for any due to moisture, smooth, oily, special non-slip place and supplies.(4) application examplesEquipment: skateboards, scooters, ...