Remove or replace other quantitative methods to maintain the equipment

The current maintenance tools have seriously occupied copper, iron and rubber, disrupted the value balance of the industrial chain, and led us to fail to plan a good-looking industrial zone. The more we reach the later stage, the more serious the impact will be. I think we can replace the need for more maintenance tools with the need for more people, which will no longer affect copper, iron and rubber.
Then players can achieve numerical balance and form an automatic industrial zone, which will be more fun.