... semi-automatic sealing machine sealing quality and reliable, and easy to install, larger cylinder seal, the gas pressure 0.25-0 ... no corrosion can be liquefied. Main seals are imported. Applicable to all kinds of aerosol filling valve. Booster pump with large ... this machine, all the pneumatic valves are used the national standard pneumatic valves, and all the open design, easy to replace, easy to buy ...