This self-adhesive gel sticker is made from thermo plastic rubber (tpr) which is non-toxic and environmental material. It can be used to decorate on some non-porous surface such us windows, mirrors, glasses, tiles, even on computers, etc.They currently can offer you more than 1500 different designs ranging from christmas holiday, halloween, easter, st valentine days to everyday series, from plants to animals, from sea-life to insects, etc.They are usually sold in a polybag with a colorful header card which is often supplied by clients.They have passed tests for european, usa, japan market according with its and sgs such us en 71, astmf 963, phthlate1 íºc 2 pahs.Those products cannot be used in a car and place above 40 degree temperature.. And also it cannot be applied on coating glass, tile aperture as well as paper, lumber and leather made outs.Children under 6 six years old are not allowed to touch it alone in case of choke. It depends