Thanks to the generous topic of "Universal Century Series," I've been looking at a lot of materials, and even though it's a science fiction work, I've made many discoveries and it's been fun.
Among the summaries I found, there was one that mentioned the subject in the title.
Data was collected with the hopes of this unit, the "MS-06Z" Psycommu Test Type Zaku, and the "MAN-03" Brown Bro,
and in just two months they went on to produce a unit called "Lalah's Custom MA" and something like the Zeong, which is astonishing when you think about it in terms of industrial production of heavy equipment in the real world.
"Zeon, the threatening mechanism

U.C.0079.10.16: Development of the MS-06Z and MAN-03 begins. | ふっださん's Gunpla works