JAC has been focusing on the development of safety performance during the whole process of the development of complete vehicle，from the feasibility analysis in the concept design stage，the CAE in the modular design，the air bag calibration test and integration of constraint system in real vehicle stage，and the trial test for the safety performance of the complete vehicle.It is called JNVPS（JAC NAM Virtual Performance System）.The development of JAC's Refine A60 B-class car is also conducted in this process system.Of which，for the own-brand medium- to high-end cars，in the area of safety equipment，the car uses 8 air bags，pretension seat belts in both front and rear seat.Under the condition of complete vehicle's acceleration meeting the target，the key problem for the safety performance development is the matching of system integration.A lot of tests were conducted to optimize the restraint system to reach the requirements of the Five-Star Rating in C-NCAP.