Polycrystalline silicon absorbs sunlight and energy, saves energy, saves electricity, prevents rain and dusts, and does not rust easily. The imported chip has an average life span of more than 50000 hours, with stable performance, high brightness and long service life. Zinc plating is not only beautiful, smooth appearance, burr free, but also rustproof and corrosion resistant. The lamp shell is thickened and made of aluminum, durable and not rusty. The base is smooth, strong and stable, and it is more convenient to install.