A new type of expansion tank (ZL 2019 2 0708021.7)
An air conditioning expansion tank (ZL 2019 2 0312025.3)
A new type of expansion tank (ZL 2019 20381996.3)
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)
- Adjustable safety valve (ZL 2019 2 0250356.9)
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)
A new valve with adjustable flow rate (ZL2018 20882761.8)
A monitoring device for central air conditioning filter (ZL 2018 2 0512312.4)
- Safety valve (ZL 2018 2 0850737.6)
A wireless one tow one heating valve outdoor control device (ZL 2018 2 0872270.5)
Visual differential bypass valve (ZL2018 2 1676956.3)
Non-condensation target flow switch (ZL 2018 2 0737763.8)
A flow control device (ZL 2018 1 0183807.1)
A two-way flow control valve (ZL 2018 1 0116656.8)
Air Box (ZL 2018 3 0178477.8)
ACOL High tech Enterprise Certificate(2022-2025)
Specialized special new Certificate 2021-2022