To ensure wheel quality, every machined finished wheel will go through geometry dimension check, non-destruction mechanical property test, magnetic inspection, ultrasonic inspection, static unbalance and periodically X ray spot check.

Measuring of static unbalance amount is performed at gravity static balance machine imported from the United States. The machine is on-line static unbalance machine with innovative technology. Positioned in tread, which is the first use in China, the machine is characterized by short measuring cycle time and high accuracy.