It is used to test the sealing performance of ceramic electrodes, lithium battery shells and cover plates. 　　 performance characteristics: 　　1) Special tooling design, can detect multiple workpieces at the same time; 　　2) Special helium cover design ensures uniform helium spray; 　　3) Dedicated helium cleaning function to reduce the environmental impact on the system background; 　　4) Fast detection cycle: 5 seconds/piece; 　　5) High detection accuracy, minimum detectable leak <1×10-8Pa.m3/s;