This document provides specifications for several GB-DS type gas booster models. It lists the key specifications for each model including the pressure ratio, inlet and outlet ports, discharge rate, weight, and minimum and maximum operating pressures. It also provides a diagram of the main components of the gas booster, which includes an air driven section, inlet, outlet, poppet valve, high pressure cylinder, and silencer. The document notes that product specifications may vary depending on usage and lists some important variables that affect the gas booster's performance when increasing pressure, such as driven air pressure and flow rate.