What are the 2 types of metal ceiling materials?

Aluminum alloy and galvanized steel are the two main kinds of metal ceiling materials. These materials are tough, can resist fire, and are simple to clean, which makes them ideal for places like stores and public spaces. In comparison to other ceiling materials, metal ceilings add strength and durability to the structure. ดังนั้น, they are widely used in non-residential buildings such as offices, โรงพยาบาล, ห้างสรรพสินค้า, and airports.