MPCVD Molybdenum Stage is the most frequently used substrate material for microwave plasma chemical vapor deposition (MPCVD) which plays a role in the reaction process as support of reactant. MPCVD has become the main method of growing high quality diamond film. Under the mixed atmosphere of CH4 and H2, big size diamond grits or films with advantages of high purity and uniformity can be prepared after a series of reaction, such as discharging, etching off by the plasma and deposition.