Domestic production of goods such as televisions, radios and even extremely high technology such as tractors has been declining since the 70's.
If you go far enough back (100y or so) then "imported" usually referred to raw materials, spices or very exotic equipment such as furniture - the supply chain and tooling was mostly domestic.
That was "advanced modern technology" then, and as the passage of time has marched forward, what we consider modern changes - so what's your point?