... of Zoomlion! 3)Casting Technique: vacuum process casting, sand casting process and lost foam casting process.4) Nondestructive testing like UT,MT,PT ... steel,stainless steel and iron. Advantages of our V-Process Casting V-Process Casting is the most efficient way to produce castings ... it produces a much better quality part.With the V-Process today, castings of all sizes and shapes, can be used ...