... steel, iron, etc.3) Machining: turning, milling, drilling, grinding, threading, CNC machining.4) Finishing: sand blasting, polishing, plating, acid treatment, anodizing ... test), RT(radiograph test), UT(ultrasonic test), PT(presure test), CMM(Coordinate measuring machine), SI(Surface indicator), HT( hardness test)Export Market/ RatioEurope, USA ...