Zhengbu (ZB) portable folding electric vehicle uses aluminum-magnesium alloy die-casting integrated molding process in the frame part, which abandons the problems of multiple processing links, limited modeling, and defects in the weld seam of the traditional welded frame. It reduces costs and the weight of the frame while increasing the possibility of modeling, greatly improving product production efficiency and product quality. The use of arcs and curves shows a concise and unique product beauty, showing a sense of luxury and experience beyond the product price.