There are many kinds of adhesives for plastic bonding, such as dry glue, structural adhesive, uv adhesive and polyurethane. The specific bonding strength depends on the material. Ordinary materials such as pc and abs can be bonded, but if you encounter some difficult materials such as pp and pe. You need to use some primer. In terms of strength, the strength of structural adhesive is relatively high. Dry glue followed closely with water and ultraviolet rays.