These companies only deal with licensed distributers.
First thing you will need to have a valid state resale certificate, A registered business and a pretty big line of credit. As well as verifiable references by either bank or trading partners. .You will also have to have access to trucks and trailers to pick up the product. When you deal with an electronic manufacturer your working with a market giant that wants serious companies with lots of dough to distribute thier product.
Most of these very big manufacturers have a minimum purchase amount of 1,000 - 50,000 units. They have official distributers that have much smaller minimum amounts but they boost the prices to wholesale so they can make a profit. They use thier large capital to buy the minimums and distribute them to all the retail outlets.
Unless you have between $250,000 to $5,000,000 in disposable cash or credit. The actuall manufacturers wont even respond to your phone call.
If any of us had that type of ability, we definately wouldnt be here :D