Cheri Electrothermal Equipment Limited are CO2 regulator manufacturer. This is a device that is used to control the amount of CO2 gas that is released into the atmosphere. This device is designed to allow the release of CO2 at a controlled rate and pressure. This regulator is designed to be used with the use of an external CO2 tank.
https://cheriheater.com/produc....t/co2-regulator-manu