Every low density industrial buildings product 9 freight every 2hours 24minutes.

And medium density industrial buildings product 9 freight every 1hour 12minutes.

And high density industrial buildings product 9 freight every 36minutes. It's going faster.

Low and medium buildings are fine if the traffic is fluent. They don't claim about shipping problem.

But high density buildings are keep claiming for shipping freights. Because their production speed is faster than their shipping speed.

I've build trade depots right next to them, but still have the problem.

Should I just destroy them out?

What can I do?