In 2021, HCTE signed the project of two chambers of vacuum helium leak test equipment with Russian customers. The equipment is used to detect the helium leakage of condenser and evaporator. The technical requirement is that the leakage rate is 1 × 10^-5 mbar L / s, gross leak test pressure 25bar, cycle time 30s / piece. With professional vacuum leak detection technology and services, HCTE has won the trust of customers and completed the delivery of two chambers of vacuum helium leak detection equipment on schedule.