1.20 years factory and workers 2.machinary;7 running lines 3.professioal QC 4.factory producing 5.producing as your demond 1.Angle iron, a flat rod that lays the foundation of most structures.Man has evolved in many ways, from style to the place of his living. As he has evolved, he has made advancements in technology, engineering and structure. Iron is one of the basic metals present on earth and ...