1. A cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl a cɔl

2.Parts nickel plating treatment resistant to corrosion, long lasting. 2.Parts nickel plating treatment resistant to corrosion, long lasting. 2.Parts nickel plating treatment resistant to corrosion, long lasting.

3.Threaded glued treatment, sealing performance good, easy to use. 3.Threaded glued treatment, sealing performance good, easy to use. 3.Threaded glued treatment, sealing performance good, easy to use. 3.Threaded glued treatment, sealing performance good, easy to use.

4.Disconnect ring elliptical design, easy to remove the gas tube. 4.Disconnect ring elliptical design, easy to remove the gas tube. 4.Disconnect ring elliptical design, easy to remove the gas tube.