What are the advantages of cast aluminum doors compared with copper doors?

The biggest disadvantage:

Bronze door: Copper, its cost is high, collision damage.

Cast aluminum door: The cast aluminum door is heavy, not easy to oxidize and rust; the pattern has characteristics, the craft is purely manual, explosion-proof, and the cast aluminum door is solid aluminum. Both are relatively atmospheric and difficult to maintain.

biggest advantage:  

The cast aluminum door is heavy and the pattern has characteristics. The cast aluminum door is solid aluminum, explosion-proof, and the craftsmanship is pure handwork, which is more atmospheric;

The biggest advantage of Tongmen lies in the word "copper", which is actually copper that is less than 1 millimeter.