Revolving Contracts? (White Giant)

Forgive me if this question exists already, I didn't see it.

That being said, is there a way to set up a revolving purchase contract between two companies in my enterprise? AKA, can I contract one company to regularly purchase an input from another company of mine?

I used to play a couple of years ago and seem to remember doing this. Can someone help me figure out how to do this again? Many thanks in advance.

OK Ill give this a shot. For my country i did an experiment; i found a corp on the list, opened it and scrolled down till u find supplies that this corp needs ( i choose electric power). Then find the corp in your country that u want to provide the supplies (picked power corp). once u open power corp (or whatever) scroll down till u find the heading "Product offered". click on trade directly youll get a menu with 2 options, pick "sell directly to countries or their corporations". Type in the name of your country, opens up the propose direct sale menu. type in the amount u want to offer. at this point i got a message saying that i couldnt offer the amount cause i didnt have any in stock. so i went back to the products offered stage and under that i found a tab (under contracts)that lets u reserve part of your monthly production, it starts in automatic got to put it to manual and type in how much u want to res

yeah once u reserve how much produciton u want at the supplying corp u can then contract that block of production out. once the direct buy request is sent, youll get a message where u can accept or decline.
Tuasman