Material quality: High voltage die cast aluminum shaping outer shell , with external surface treated with static electricity spray plastic painting. Specific: Anode oxidized aluminum reflector specifically designed for narrow beams. Replacement of the bulbs by front opening with simple and protection simplified. Graduated boards are provided for provided for the lamps and lanterns giving convenience for adjusting the illumination angles. Main application : It is suitable for stereotypic surface illumination for high-store buildings.