Goods which are purchased or received by the enterprise from within
the State will be considered goods which ``have moved across State
lines'' if they have previously been moved across State lines and have
not lost their identity as out-of-State goods before they are purchased
or received by the enterprise. Also goods which have been assembled
within the State after they were moved across State lines but before
they are purchased or received by the enterprise will still be regarded
as goods which ``have moved across State lines.'' Such goods are still
identifiable as goods brought into the State. This is also true in
certain cases where goods are processed to some extent without losing
their identity as out-of-State goods. For example, out-of-State
furniture or television sets which are put together within the State, or
milk from outside the State which is pasteurized and bottled within the
State, before being purchased or received by the enterprise, are goods
which ``have moved across State lines.'' They have already moved across
State lines and they retain their out-of-State identity, despite the
assembly or processing within the State.