... 4. one hour reach the port SAND BLASTING ALUMINUM PROFILE FOR WINDOW AND DOOR1. Extrusion process:Aluminium ingot - founding- extruded ... Extrusion workshopPowder coated workshop260workers, 30,000m2 square meters, 2500tonnage machine, advanced equipments, 10 years experience, one our reach ... will do our best to satisfy you!Pictures for your reference: sand blasting aluminum profile for window and door