20 watt monocrystalline solar panel with 1) Power:300W 2).for solar product use 3).CE certificate 20 watt solar panel18V, monocrystalline sillicon module ... the Wmp range,Our factory can produce solar panel and solar module from 1.5W-180w (1.5w, 2.5w, 5w, 10w, 20w, 40w, 50w, 60w ... to the customers LOGO, Can be printed on the solar panel or solar module, 5). Refer to our factorys advantage,Good quality ...