The operation of an injection molding device and {HEAD ~ the forming} of {TAIL ~ sound carriers} in molding cavities bounded by molding plates are known per se and consequently need not be discussed in more detail herein 
of
The operation of an injection molding device and { HEAD ~ the forming } of { TAIL ~ sound carriers } in molding cavities bounded by molding plates are known per se and consequently need not be discussed in more detail herein
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