1. Check the aluminum profile shell factory certificate, pay attention to the factory date, standards, skill conditions, enterprise name and production certificate number.

2. Carefully bservation of the appearance of the product, the product should be bright color, good luster, appearance can not have significant scratches, bubbles and other shortcomings.

3.Use water, washing and soap when cleaning, but not with other organics.

4.  When protecting normally, you should not use brushes and other hard objects as cleaning things, should choose soft cotton yarn and cotton cloth.

5. Users in coastal areas have the best choice of electrophoretic paint profiles with better corrosion resistance, powder spray profiles or fluorocarbon spray profiles.

6. Must pay attention to the wall thickness of the commodity, door, window product thickness should not less than 1.2mm, powder spray coating thickness is not more than 40-120 scale, fluorocarbon paint spray products should be more than two coatings, not less than thirty.