Ching-yu Hsieh 谢静瑜
Tsung-Yu Hsieh 谢宗佑
Tung-Yu Hsieh 谢东育
Yu-Ling Hsieh 谢王禹玲 ; 选手谢王禹玲
Hsieh Yu butterfly valve is designed for pipeline system connection between two flanges or with one flange for connection with the pipeline system of which one side has been fixed.
协羽蝶阀是设计用于管路系统连接，两个法兰间的连接或一个法兰间的连接或一个法兰间的连接用于一边已经固定的管路系统。
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