So this really is the Control Valve is also very good it, and the usage of the Control Valve is still a lot of it, this time I also saw the inside of our company, because we are the new company is to be renovated recently, that is, some bad to change it, but this time the new Control Valve this really is very good too, but it is also very easy to use, one can understand how to use it, particularly good before use, and even the workers say is the installation of Control Valve is very good, it seems the company is also very good for us, and gave us such a good use of the Control Valve of it, really is a special rod .