Poly-ester resin in liquid condition. After the reaction heat to make a hard plastic that is unable to return the image to turn into a liquid plastic. This type of plastic called Thermosetting plastic
Polyester thermoplastic resins in the liquid state. The reaction heat will solidify a hard plastic that can not be converted into a liquid plastic rehydrated again. This is called plastic Thermosetting plastic
Polyester resin in a condition of the liquid. After the reaction heat is applied to a rigid plastic hardening cannot be transformed into liquid plastic picture back again, call this type of plastic. Thermosetting plastic.