... 250 emplyees in our company. 3. Main Specifications of Precision Casting Parts ProcessLost wax casting(Silica sol process or Waterglass process ... according to your drawings, also we can do complicated parts.(2)We can do CNC machining and many kinds surface ... Professional technical services4, Products with much patents5, 17 years experience of mechanical seal6, ISO90017, We accept O/A and all kinds ...