This customer is the leading enterprise in domestic hydraulic pipe fittings industry. The customer had originally used multiple brands of indexing chucks, and chose us finally. One-time machining of elbow, tee, cross and other products is realized by using indexing chuck on the customer site. The number of machines operated by worker has also been changed from four to six, and then to 12 at present (matched with one on one manipulator). At the same time, customer uses indexing chuck + manipulator + three-jaw to change the processing procedure of core products from four-five to one currently, and realizes its automatic loading and unloading material. In addition, customer also uses our B-series chucks to realize two-step and one-time machining of heavy series straight joints. At present, the customer has more than 150 sets of our company chucks in use.