... quality 2.Through CE,ISO certification 3.Maintenance free 4.Life time 25years Item No.ST4001Lamp Pole5M ,hot dipped galvanized ... requirementSolar Panel60W polycrystal silicon high-efficiency cell with service life ≥25yearsLED LightLED 15Wlife time more than 50,000 ... CBattery Boxreinforced plastics,with obturatingring,water proof,serive life≥25 yearsController12V/10A, Intelligent, Light & Time sensor, ...