The internal features can be used for attaching parts or components to {TAIL ~ the multi layer substrate}, thereby securing the parts or components to the multi layer substrate and {HEAD ~ thus the housing} 
The internal features can be used for attaching parts or components to { TAIL ~ the multi layer substrate } , thereby securing the parts or components to the multi layer substrate and { HEAD ~ thus the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD