Thermosetting acrylic resin, also known as cross-linking or reactive acrylic resin, can overcome the disadvantages of the thermoplastic acrylic resin, so that the mechanical properties of the coating and chemical resistance are greatly improved. The reason is crosslinking reaction during the film forming process,finanlly forming a network structure- insoluble and infusible. The molecular weight of thermosetting acrylic resin is generally lower, around 1000, a high solids resin approximately in 3000.