... pipeline laying, the layout can be adjusted lighting, security of energy non-polluting, no manual work stable and reliable, ... cell component parts (including stents), LED lamp, a few parts of the control boxes, embedded devices and light poles. Small ... -30 °C~ +55°CPanels: single / polycrystalline silicon conversion efficiency of solar panels, life expectancy ≥ 25 yearsBattery: Solar colloid, silicon, ...