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Improve the hardness of powder coating film up to 3H ~ 5H, improve wear resistance, scratch resistance, impact resistance, resistance to yellowing, acid and alkali resistance and other properties, at the same time can improve the film toughness; Titanium dioxide is highest resistance to high temperature 240 ℃ become yellow, barium sulfate resistance to high temperature of 250 ℃ to become yellow, silicon powder is highest resistance to high temperature 280 ℃. Add 5% to 15% of the total amount