TEL: +86-532-86623958
FAX: 0532-86623959
E-MAIL: guihai.yu@tongrongchina.cn
ADD: No. 1, Daneng Road, Jiaobei Industrial Park, Jiaozhou, Qingdao,China
Copyright © 2020 Qingdao Tongrong Electromechanical Co., Ltd.
Copyright © 2020 Qingdao Tongrong Electromechanical Co., Ltd.