... Plastic parts made in the imported LLDPE with automatic rotate plastic machine,anti-UV,anti- ... crack Metal parts made in the national standard steel pipe,welded by the industrial robot,strong ... static spray, 2) surface coated polyurethane 2,Column with steel and hot dip galvanized pipe material, diameter 114mm, ... thickness 2.0-2.5mm 3,Plastic parts with South Korea (SK Corporation and Samsung 6LLDPE) ...