... aluminium 3.other size:4,5,6,8 Inch 5 Inch Aluminium LED downlight casing5 Inch Aluminium LED downlight casing5 Inch Aluminium ... LED downlight casing Specifications:1.Material:Aluminium2.Opening size:145mm 3 ... 80 sets CNC machines,5 experienced engineers,150 workers.more than 5 years experience in producing ...