rustless, self-cleaning, high-intensitive, maintenance-free, pollution-free, environmentally-safe air-conditioner guardrail galvanized air-condition guardrail 1.Base Material: ... with no welding 5 no fracture , rust and damage 6 anti-theft screws make our products stronger 7 ... and personalized designs 9 colorful surface, aim to meet your special needs 10 free maintenance, save your time Quality ...