http://pastport.jp/user/ktmagnet ja-JP Ningbo Ketian Magnet Co., Ltd., founded in 2001, is ranked as a National High-tech Enterprise in China devoted to the development and production of high grade sintered NdFeB magnet.https://www.ktmagnet.com/ 2024-06-04T11:11:00+0900 http://pastport.jp/user/ktmagnet/timeline/Ningbo%20Ketian%20Magnet%20CO.%2C%20LTD. ktmagnet http://pastport.jp/user/ktmagnet/timeline/Ningbo%20Ketian%20Magnet%20CO.%2C%20LTD.