... and ultraviolet radiation very strongly.Post:Mushroom special Tubes (48*1.5mm) is designed refinedly and ... road, railway, airport, residence district, seaport, garden, feeding and husbandryProduct Features:Corrosion resistant, age resistant, sunshine proof, ... galvanized, Hot-dipped galvanized, PVC coated, Electric galvanized then PVC spraying, Electric galvanized then PVC coated. The design and ...