中捷资源：目前的主营业务为工业缝纫机的研发、生产和销售业务

Core Viewpoint - The company, Zhongjie Resources, primarily focuses on the research, production, and sales of industrial sewing machines, with its main revenue derived from these sales. The company does not engage in copper mining activities [1]. Business Operations - The company's main business is the research, production, and sales of industrial sewing machines [1]. - The primary source of revenue for the company comes from the sales of industrial sewing machines [1]. Corporate Structure - The company transferred 55% of its stake in Zhonghui Futures Brokerage Co., Ltd. on December 22, 2014, and currently has no association with Zhonghui Futures Brokerage Co., Ltd. [1].