1. The car is fully connected, and the internal parts of the product are included;there are many types and specifications, and they are widely used in various radon assist systems;2. The flow performance is excellent, and it can pass the same flow rate as the inner diameter of the chrysanthemum pipe;3. It is convenient and fast to unplug and plug in the pipe raft, and the quick connection part of the oxygen pipe is safe, reliable and durable;4. The screw part is sealed, and the M5 metric screw is attached with a sealing gasket to prevent leakage in the fast-connecting part of the screw;5. Nickel-plated gold can prevent corrosion, contact and pollution, and can be replaced by a straight seal;6. The all-gold wine neck is used in high-temperature environments.