http://pastport.jp/user/ro-easy ja-JP Rongtai Hardware was established in 1990. It's one of the first company to manufacture window friction hinge in Shantou,China.Later we developed the other products,such as locks in Zhongshan.https://www.ro-easy.com/ 2022-06-15T11:05:29+0900 http://pastport.jp/user/ro-easy/timeline/ro-easy ro-easy http://pastport.jp/user/ro-easy/timeline/ro-easy