Corp Using own Output

Question: Does my factory maintenance corp automatically use units it makes for the 96 that it needs every month? If not, if I reserve 96 units a month will it use those or still try to buy them on the market?

Thanks

It'd be pretty stupid for a factory maintenance corp to buy factory maintenance services from other corps.

It'd be like a cleaning service place contracting out to a different cleaning service place.

I haven't researched on that but most likely it will buy them off the market. Even if you reserve product. Which would be dumb because you're only restricting profits.

In fact its better for it to buy off the international market because if your corporation produces a high quality product greater then 215q and buys or uses its own product at market price it will lose profits. It makes no sense to buy/hold factory maint at 260q when 210-220q is the optimal quality range of supplies. Argue with me on the issue, but if you really really look into things like that you will see trading on the world market is better then having your corporation supply itself, sure cm and local SALES are more profitable, but when it comes to corporation supplies that you have little control of quality you will lose profits.

You can experiment on that and fact check me if possible.

It is rare for corporations to need a raw material they produce.
One case is indeed maintenance products and maybe one more case.
There is no feature to make them use their own products but:

Corporations can contract their output to the country and the country can supply its own corporations.