Outdoor advertising often uses three-dimensional luminous letters. Three-dimensional luminous letters are usually divided into metal luminous letters, vacuum formed letters, resin luminous letters, etc.
Resin luminous letters are also called full-body luminous letters or agate luminous letters. As for its principle, it is actually the fiberglass method, pouring the resin mixed with curing agent, pigment, and filler into the mold, and then letting it cure and take shape.