[2020] Industries - DLC working with specialization

Problem 1 and 2 are pretty much the same issue. You produce so much raw material, that your city can't keep up. Ways to fix this is add more storage buildings (you need enough trucks to be able to handle your production) and making it easier to export the excess raw materials by having a cargo station/harbor/airport nearby.

I go into a bunch more detail in this guide, but in short it's a question of enough storage, so you have enough trucks to distribute and export the amount your are producing. :)

https://steamcommunity.com/sharedfiles/filedetails/?id=1550292479