... : round, square, diamondCharacter: winding-resisting, Ageing-resistingThe finished: electro-galvanized, Hot-dipped galvanized Materials: Aluminum plate, carbon steel plate, stainless steel ... steel, stainless steel, aluminum steel, plywood, hipboard, density board, plastic film, etc. Hole shapes:Round, rectangular, square, triangle, hexagonal, diamond, lightly ...