Hardware Composition of Bluetooth Headset Almost all the visible plastic and metal components, housings, buttons, fitting and decorative parts of a Bluetooth headset are manufactured using some form of injection molding for optimum aesthetics, ergonomics, quality, and cost. The internal electronics are then assembled and fit into these plastic molded structures. But it is mainly divided into three processes: plastic injection molding, zinc alloy die-casting, and metal injection molding. Plastic Injection Molding Parts The plastic injection molding accessories of the Bluetooth headset mainly include a thermoplastic injection molding body, such as a battery compartment, earplugs, sound insulation brackets, Etc. And thermoplastic injection molding accessories like Eartips, Protective Cases, Etc., details as follows： Earbuds: The earbud housing that goes in/over the ear is injection molded to obtain the desired shape that fits comfortably in the ear. Various plastics like ABS, polycarbo
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