... surface treatment, eg:anodized 3.Welcome to OEM. led light tube led light tube 's specificatin: SizeDIA 30mm*L500mmMaterialaluminum alloy ... treatmentmill finish,anodized sliver ,anodized bronze, etc.Application LED light,LED street light,cap-lamp,down light etc. Asage ... over 50 workers.C. Equipments: CNC machines, bending machine, Automatic spark machine, line cutting machine, shearing machine,etc. D. ...