Shandong Zihao Industrial Co., Ltd is a science and technology enterprise specialized in the production of auto parts and engineering machinery auxiliary equipments. Auto leaf springs and bucket teeth of excavator and its accessories are the main products of the company for now. Built in 1998 with the registered capital of fifteen million Yuan, it has now covered an area of 90, 000 m², of which the plant area 50, 000 m². Now company has 386 employees, including 65 full-time researchers. It has more than 200 production and test equipments which provide an output of 50, 000 tons of auto leaf springs and 30, 000 tons of engineering machinery auxiliary equipments per year.