Ten-Station Automatic High-Pressure Relay Gas Filling and Sealing Machine for Custom Automotive Relays | Auto Parts Test Equipment Product Description HeJin Ten-Station Automatic High-Pressure Relay Gas Filling and Sealing Machine is designed for the automated gas filling and sealing process of customized high-pressure relays. With a ten-station working configuration, the system is developed for manufacturers seeking a more consistent, efficient, and repeatable production