The research building was built a few years ago and is much newer than the other buildings in the rolling mill.

However, in this era, the building was not designed, the whole building had a total of five floors, and the corridors were not open-air like other buildings, but were placed inside.

At the same time, every floor of the interior is guarded by guards!

Ma Haitao also learned this information just now.

The exterior of this scientific research center is guarded by the security guards of the rolling mill

Chapter 162 of "The Wonderful Life of the Courtyard" Sixteen thefts are being fought in hand, please wait a moment,

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