4.91 (Any 3-D shape) Large Metal Structure, Made of Bent Aluminium Profile, with Extra Precise Dimensional Tolerances
4.92 Complex Shape 3D Metal Pressing of Plates, Combined of Complex Pressing Tool and Manual Precision (an extra to 4.53)
4.93 Welding and Replacement of Material, with Extremely Low Heat Input
4.94 Manufacturing of Spiral Welded Hollow and Volute Shafts
4.95 Manufacturing of Extruded Profile „Slice” with Complex Shape (with Machining as well)