... Solar madule, Solar panel, Photovoltaic power syetem, Large-scale PV power station, Solar street light, Solar garden lamp, ... establishment brightness, Solar street lamp, Off-grid PV power system, On-grid PV power system etc..2. Qualified certification: ISO9001,ISO140001,ISO18000, ... whole unit5. Lifetime: Twenty-five years6. Servive: Field installation and debugging guidance by professional engineer