... .100% manufacture 3.whoever inquire,we will response aluminium parts for LED tub light &led cover, aluminum cover, light cover, aluminum ... .Production process :sawing,milling,drilling,punching,CNC machining etc.Software for drawing: atuo CAD.etc4.Surface finish:sandbalsting,polish,powder coating ... can be 0.05mm ..welcome your drawing.. aluminium led lamp heatsink &aluminum lighting cover