We all know do not know Triple offset butterfly valve ah, in fact, is the first time I hear such words Triple offset butterfly valve, perhaps my reason for staying at home for a long time, or that I did not even care about how Triple offset butterfly valve of information right, but when I saw the Triple offset butterfly valve of the report, my father went and chat, also talk to the Triple offset butterfly valve, thought nothing of the father at home do not know Triple offset butterfly valve, but I did not expect that, Dad amazing to know what Triple offset butterfly valve is.