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Chapter 23: Fire-Fighting Drone
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Chapter 25: The Police’s Order for Drones
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... ous materials and the models of the accessories yesterday.
Today, he could go directly to buy them.
To be honest, he was still somewhat conscientious.
For the body of the fire-fighting drone, he didn't use the cheapest materials but opted for 6051-T6 grade aluminum alloy instead.
This aluminum alloy cost around twenty yuan per kilogram.
Of course, he spent a bit more here, which meant he had to make up for it from other places.
So, he decided to ch ...
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