Pre-fabricated metal structures; Modular metal structures; Metal structures designed for assembly, disassembly, and transport; Metal structures made of components designed to enable the structures to be scaled in size
Metal GoodsPre-fabricated non-metal structures; Modular non-metal structures; Non-metal structures designed for assembly, disassembly, and transport; Non-metal structures made of components designed to enable the structures to be scaled in size
Nonmetallic Building Materials