1) The items back with 3M auto adhesive glue.
2) Clean the suface where you want to stick. Keep dry and clean.
3) Please do press hard especially on the edges at least 2 mins after installing.
4) If the weather is cold.Please use the hair dryer(hot air blowing)in order to provide the best connection.
5) Please don’t touch water and Keep dry after been install at least 72 hours. Or it will easy to fall off