... glass cover, sealed with silicon rubber, has two advatages: high toughness and high remittance.3,Sealed by silicon rubber of thermostability ensures ... dissipation. 5,Aluminium reflector of high purity with anodizing treatment to enhance utilization ratio of light beam.6,Free adjustable angle for ... , square, city street lighting. with adjustable 84W aluminium die cast high way light housing HH-803-B