1. Seals kit:NOK,parker 2. Heat treatment: Quenching&Tempering which makes the piston rod super high hardness. 3. Cleaning: Ultrasonic cleaning 4. Cutting: High precision provided by automatic roller cutting machin 5. Welding: Welded by the automatic welding machine. 5. Testing: Ultrasonic detector, spectrograph, CMM, metallography, chrome thickness tester. 7. Advantage: Simple structure & reliable work, easy maintenance & diverse connecting ways.
