... ISO verified factory 4. Good performance aluminum die casting sun-flower led street lamp shade Material Aluminum ... Stamping, Die/pressure casting, CNC processsing, Punching, Riveting, Bending, Cutting, Welding, Threading, Grinding, Milling, Machining, Assembly, etc Surface treatmentannealing ... tooling design, moldflow simulation , die casting technic analysis, CNC machining and surface treatment.