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Chapter 23 fire drone
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Chapter 25 Police drone orders
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... nd the models of accessories yesterday.
Today, you can go directly to the door to buy it.
to be honest.
He is quite conscientious.
For the body of the firefighting drone, he did not use the cheapest material, but instead used 6051-T6 aluminum alloy.
This aluminum alloy costs about 20 yuan per kilogram.
Of course, some extra money was spent here, and it must be made up from other places.
So he changed the turboprop engine that he was ...
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