Certainly, Qin Feng was referring to the parts that were looted from the Floating City of the Grans at the Longchuan mountain ranges, there were definitely some broken parts, and even some fully functional parts that could still be put into use!
The reason behind Qin Feng's intention to own the factory was to support research on those items.
The City of Death was filled with factories of all sorts, where the firearm factory was the most profitable one, and the most horrifying ones were those that involved special potions.
Human experiments were entirely ungoverned at the City of Death.
Most of the extremely effective strengthening potions that had major side effects were produced in the factory.
Although Qin Feng was within the Dark Coalition, unlike when he was in the Human Alliance, he did not bother to question the Z Organization and diverted his attention to such matters.