Material quality: High pressure die cast aluminum with armored safety glass on the front face and high-purity aluminum reflector hood. Specific: Graduated boards are provided for provided for the lamps and lanterns giving convenience for adjusting the illumination angles. The lamps and lanterns are provided with dust and damp-proof property with its effects reaching high up to IP65. There are grading systems with three kings of angles. The lamps and lanterns contain several electrical appliance parts including the ballast etc.Making process of maintenance and protection easy and simplified.