http://pastport.jp/user/valteccn ja-JP VALTECCN is an industrial butterfly valve manufacturer that provide all kinds of butterfly valves.https://www.valteccn.com/butterfly-valve/ 2022-05-12T18:10:33+0900 http://pastport.jp/user/valteccn/timeline/INDUSTRIAL-BUTTERFLY-VALVE-MANUFACTURER valteccn http://pastport.jp/user/valteccn/timeline/INDUSTRIAL-BUTTERFLY-VALVE-MANUFACTURER