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An air conditioning expansion tank (ZL 2019 2 0312025.3)

A new type of expansion tank (ZL 2019 20381996.3)

An anti leakage nozzle component （ZL2023 23390371.9）

A spiral microbubble exhaust valve（ZL202420165160.0）

An expansion tank with high installation performance (ZL 2019 20382812.5)

An automatic water refill valve (ZL 2019 20387464.0)

An air pressure switch for easy adjustment of air pressure (ZL 2019 2 0381978.5)

A pressure adjustable air pressure switch (ZL 2019 2 0386349.1)

A fully automatic water refill valve (ZL 2019 20248707.2)

A high precision safety valve (ZL 2019 2 0382025.0)

- Adjustable safety valve (ZL 2019 2 0252127.0)

A bypass valve with filter function (ZL 2019 2 0381971.3)

A new high efficiency exhaust valve (ZL2019 20382000.0)

A new type of automatic control flow switch (ZL 2019 2 0386434.8)

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A new bypass valve (ZL 2019 2 0386494.X)

An exhaust valve with filter function (ZL 2019 20386383.9)

A safety valve with pressure compensation function (ZL 2019 20386548.2)

A new type of water refill valve for easy cleaning (ZL 2019 2 0382787.0)

A new type of flow switch (ZL2019 2 0382005.3)

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Visual differential bypass valve (ZL2018 2 1676956.3)