When a company is faced with you wanting to buy some scheduled crizzernacker precursors most likely,
they go through this general process.
You submit a dea approval form.
For dea approval, someone is sent to check your facility, check your mannerism, if YOU are fit to buy the shizzles and if the facility is equipped properly to handle the shazzles.
Now, if you look around carefully, you might find companies that will ship you pre dea approvals. Very scarce but they are out there.
swim suggests looking your source to other countries such as mexico or India and making a trip there and shipping them back in electronics to your own lil depot.. then again.. that's just swim.
When there's a will, there's a way.