In general, the quality of imported aluminum lenses is better than domestic ones. How are these differentiated?
Among them, the use of aluminum live mirror is very wide, and it is used in many aspects of household appliance shell, indoor and outdoor decoration. It is used for decoration, with novel appearance, easy cleaning and good reflective performance, and is currently loved by everyone.

The first method is to tear off the protective film on the surface of the 4x8 aluminum sheet and touch it with your hand on the mirror. At this point, the mirror surface should leave some stains. If the mirror can be easily wiped clean with a paper towel without leaving traces, it is imported mirror aluminum sheet. If you use a paper towel to wipe more and more dirty, it is the domestic mirror aluminum plate.
The second method is to gently bend a brushed aluminum sheet over the ear. If you make a slight aluminum noise, it means that the aluminum mirror is imported; if not, it means that the aluminum mirror is domestic.