... :tempered glass 3.Aluminium material,fastener screws and stainless steel nuts. Technical parameter 1.Light source:400W-1000W High pressure sodium lamp ... galvanized 5.Mode of switch: hand control,time control and microcomputer control. 6.light source: 6-24*400W-1000W Sodium lamp or ... stations,docks,freight yard,highways,stadiums,flyovers,etc. high mast light of tianxiang lighting equipment co.,ltd