Products made by using glass fiber and its products as reinforcing materials, calcium powder as the filler, and synthetic resin as the matrix material, formed in one piece through pultrusion on a glass fiber reinforced plastic (GFRP) pultrusion machine.

Fiberglass reinforced plastic (FRP) sign posts are extruded from pultruded profiles, utilizing glass fibers and their products as reinforcing materials, calcium powder as the filling agent, and synthetic resins as the matrix material, which are formed into a single piece through a FRP pultrusion machine.