In environments that are severely corroded or do not require long-term corrosion protection or are easily repaired, such as machinery and equipment, choosing acrylic polyurethane topcoat is cost-effective. In environments that are difficult to repair, such as high towers and large bridges, choosing a fluorocarbon topcoat is more cost-effective, saving repair costs and troubles. Fluorocarbon topcoat is inferior to acrylic polyurethane topcoat in gloss and brightness. The gloss of acrylic polyurethane topcoat can reach about 95 degrees, while the fluorocarbon topcoat is about 80 degrees. Although the two have good weather resistance, they are still slightly different. In the same outdoor environment, fluorocarbon topcoat has better gloss retention and anti-corrosion and anti-rust effect than acrylic polyurethane topcoat. The former can maintain a protection period of 15 years, while the latter is about 8-10 years. Nowadays, consumers also consider the price factor when considering the value of the product itself. Obviously, acrylic polyurethane topcoat has great advantages, and the price difference between the two is nearly half.