the face cover, inner ring and outer ring are made of aluminium alloy and shaped by extrusion; the main body is made of cold rolled sheet; the surface is treated by dusting;
three optionalparts, honeycomb net,fully toughened frosted glass and clear glass, are available, and users can choose differen parts to form differernt combinations;
QR-CB51 or LED QR-CB51light source is used; the radiation ahgle is adjustable and electric appliances are installed externally;
