Any of a class of thermosetting resins made by dissolving a low-molecular-weight unsaturated polyester in a vinyl monomer and then copolymerizing the two to form a hard, durable plastic substance.

Fencing is just a structure that encloses a location; usually constructed from posts which are connected by rails, wire, boards, or netting.

C?a nhà ? có s?n thông qua công ty c?a kim lo?i