Hohhot Zhonghuan (Group) Co Ltd was established in Yuquan district in Hohhot in 1995. It is the largest chucks research and production base in China, leading the nation in the sector of machine tool accessories. 

Covering 162,000 square meters, the base produces 23 kinds of machine tool accessories. It has eight production lines, over 300 computer numerical control (CNC) pieces of production equipment, and three high-end items for precision measurement. It owns more than 20 patents for chuck products.

The base can produce nearly 500,000 sets of chucks annually, accounting for 40 percent of the total domestic output in the sector.