... hareware manufacturer : 1) 8years production experience,2) CNC machining hardware manufacturer ,3) Varuiys types 4) OEM is ... Casting Process: Client Drawing-Pattern-Casting-Rough Machining-heat treatment-Mechanical testing-Final Maching Investment ... die casting, gravity casting, sand casting4.Machining: turning, milling, drilling, grinding, threading, CNC machining, etc.5.Finishing: sand blasting, ...