materials: aluminium plate, thin low carbon steel plate, stainless steel plate, al-mag alloy plate, copper plate and nickel plate. weaving: be made by punching and be classified as expanded aluminium plate, expanded steel plate and stainless steel plate. opening shape: rhombus, square, round, triangle and scale-like opening. characteristics: be fast, enduring, graceful. usefull: used in the areas such as highway, railway, residence, irrigation works and the protection partition of machines, electrical appliances, windows and aquiculture.