... .ISO9001, ISO1400 certificate 3. Cold Casting, Extrusion, CNC Effectively Improves Heat Dissipation for LED Road Light1) Alloy6061,6063,6063B,6060,6005,6N012 ... ,make mould,extrusion ,CNC (milling finish),cutting,anodized Effectively Improves Heat Dissipation for LED Road Light