Magical adhesive velcro
The back of the Velcro is coated with a layer of hot melt adhesive at high temperature. When you use it, you can simply uncover the release paper on the back of the Velcro and attach it to all kinds of smooth and clean objects. Affordable, durable and cheap.
Ordinary hot melt adhesive: low melting point, suitable for low temperature environment and winter use, adhesion and holding power;
High temperature resistant hot melt adhesive: high melting point, suitable for summer and some high temperature mechanical use, strong adhesion and holding power.