1.Check the Aluminum Circle factory certification, pay attention to the date of manufacture, specifications, technical conditions, production license number and so on.
2.Look at the surface conditions carefully, it should be bright colors, good gloss, surface can not have obvious scratches and other defects.
3.Be sure to note the wall thickness of the product.
4.Pay attention tot he thickness of the product surface coating.
5.China Aluminum Circle routine maintenance can not use brushes or other hard objects, you should choose soft cotton yarn to clean.
6.Cleaning can not use organics. Just water, soap is ok.