HR 90i is purified and recycled for low concentration waste helium gas evacuated during the leak detection process. This equipment can recycle and purify the waste helium gas discharged from the high-pressure tank in the helium recovery system, and then recharge it back to the low-pressure tank for use again to reduce the consumption of helium on the production line. The entire system mainly adopts advanced technologies such as intelligent preprocessing systems, high-precision monitoring and fully automated control. The core purifier is imported from the United States and Japan, and has the characteristics of low energy consumption, high reliability, fully automatic, and low maintenance costs.