jtcopperの公開自分史 http://pastport.jp/user/jtcopper ja-JP Ningbo Jintian Copper (Group) Co., Ltd. Ningbo Jintian Copper (Group) Co., Ltd., established in 1986, is a large-scale Chinese copper processing enterprise.The company’s main business areas include copper processing, high-tech materials and building materials. 2023-06-26T18:10:07+0900 http://pastport.jp/user/jtcopper/timeline/Ningbo%20Jintian%20Copper%20%28Group%29%20Co.%2C%20Ltd. jtcopper http://pastport.jp/user/jtcopper/timeline/Ningbo%20Jintian%20Copper%20%28Group%29%20Co.%2C%20Ltd.