There a three ways of going about this,
1) Cheat
2) As Roguey said, the smallest of things is good. An idea might be to build a complex in Argon Prime, of all the factories it does not have, and if you can, add factories that neither of the surrounding sectors have.
3) (most expensive way) But an Equipment dock and place in a sector in which there are a lot of tech factories in nearby sectors. But several cheap traders (or even M3s) and set them to buy a product for the cheapest price. FOr example, Argon Elite > find 1MJ shield > Max price 3000cr (estimate price don't know the actual price) > within 9 jumps > put to Keith's Equipment Dock in Home of Light.
Any of these ways can get the results.
Just to add the sectors and prices use are not right, just examples.