This kind of Earphone Housing adopts injection molding technology. The injection molding refers to the process of manufacturing a semi-finished part of a certain shape by pressing, injecting, cooling, and detaching the molten raw material. The injection molding process of the plastic part mainly includes six stages: clamping, filling, pressure, cooling, mold opening and demoulding, which directly determine the molding quality of the product. This Earphone Housing is made of high quality stainless steel. In addition, Under Metal Injection Molding, The Tolerance Of Stainless Steel Earphone Housing Can Be Reached ±0.05 And The Dimension Of The Manufactured Parts Can Be Near The Net Shape. What’s more, the Earphone Housing has the properties of wear resistance, high temperature resistance, long service life and smooth surface, which can protect the earphone against scratching in the manufacturing.