With enhanced adhesion - Super wide 3M adhesive strip - More sticky - Glue residue can be easily removed with solvent. Ultrasonic bonding techniques: All parts of the item are fused together by ultrasonic bonding. No matter how you pull it, the top two small parts of the item will never fall off. You don't have to worry about your children putting the small button into their mouth. Please use it after 24 hours to get the best performance of the glue. The doors are cleaned before sticking to avoid the influence of dust. No drilling or screws required, easy assembly.