1. Check the product factory certificate, pay attention to the factory date, specifications, technical conditions, business name and production license number.
2. Carefully look at the surface condition of the product, the product should be bright color, good gloss, the surface can not have obvious scratches, bubbles and other defects.
3. Be sure to pay attention to the wall thickness of the product, door, window material product thickness should not be less than 1.0mm.
4. Pay attention to the thickness of the product surface coating, anode oxidation product film thickness is not less than 10 m, electrophoretic paint product film thickness is not less than 17 m, powder coating thickness is not more than 40-120 m range, fluorocarbon paint spraying products should be more than two coatings, not less than 30 m.
5. Users in coastal areas are advised to choose electrophoresis paint profiles, powder spray profiles or fluorocarbon spray profiles with better corrosion resistance.
6. No other hard objects such as brushes should be used as cleaning tools for daily maintenance, and soft cotton yarns and cloths should be selected.
7. Water, washing spirits and soap may be used for cleaning, but no other organic matter may be used.
