... 60Hz 2.conserve 80% energy 3.CE , RoHS Article name: Half Spiral Energy Saving Lamp Power: 5W, 7W, 9W, 11W, 13W, 15W, 18W, ... . As the leading products , energy saving lamp series , LED lamp series , solar garden light series , ultraviolet aterilization lamp ... domestic and foreign clients alike ,through the ISO9001 certification ,CE , ROHS, CSA , the energy efficiency rating certicicate and others . ...