In December 2013, Anhui David Mould was established, focusing on high-temperature alloys and matching molds for casting, deeply developing the technical track of aerospace blade molds, and accumulating solid experience in material compatibility and mold precision technology.

In June 2018, Anhui Longzhu Shanggong Electromechanical Co., Ltd. set off, leveraging David Mould's core technology and Yingliu Group's mature casting technology and quality control system, precisely entering the precision casting track. The company focuses on manufacturing high-end precision parts such as special alloys and non-magnetic stainless steel, introducing digital and intelligent equipment along with a full-process control system to avoid the shortcomings of traditional casting, helping customers reduce costs and improve efficiency in high-end manufacturing (including computing equipment).

After more than ten years of development, the company has become a leading player in the aerospace blade mold field, being one of the few domestic core suppliers capable of both aerospace and mold production, and has formed unique competitive advantages in special alloy casting and high-precision parts processing.