Born in 1980, I Built an Arms Manufacturing Empire

A modern industrial giant is reborn as the son of a third-line factory director in the 1980s. He activates a god-level craftsman system, creates popular civilian products with his left hand and becomes rich enough to rival a country, and uses his right hand to climb the military technology to shock the world. He slaps all the villains in the face and leads the old factory to rise against the tide of the times!