The existing units of the Red Police base vehicle are all established technologies, which can be obtained after the construction of the combat laboratory, but it does not mean that the technology can only be unlocked to this point.

If a country wants to develop, it must develop science and technology. Science and technology are the first driving force, and combat laboratories are used to do this.

Engineers or some native-born scientists can grow rapidly here. Yuan only needs them to come up with some sketches, and he can rely on mechanical

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