The overwhelming majority of Machine Shops concentrate on general machining of metal parts, each serves what is essentially a local market, and, if only as a matter of convenience, seem best indexed in a series of Full_Service subcategories that reflect their individual locations. However, it seems useful to isolate shops that offer a particularly specialized form of machining, and they are therefore indexed under either this main Machine_Shops category or in readily identifiable categories such as Spinning and Stamping. As will be seen, sites allocated to this main Machine_Shops category are those that focus on less common machine processes as, for example, thread rolling and cold heading.
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