Beijing Sihai Xiangyun Plastic Parts Co., Ltd.
Our company, set up in 2008, is located in the eastern suburb of Beijing. In the very beginning, we could only produce diaphragm check valves with only one specification. Now, we are able to manufacture the mini-type diaphragm check valves with all the five interface specifications of "1/8", "3/16", "1/4", "5/16" and "3/8". ...



China 