ZK International Group Co. Ltd. ZK International Group Co., Ltd. operates as a holding company, which through its subsidiaries engages in the manufacturing, research, development and sale of stainless steel pipes and carbon steel pipe products. Its products include steel band, copper strip, welded stainless steel pipes and fittings, pipe fittings, valve, light industry machinery and equipment, and other stainless steel products. The company’s products are used for projects that require sophisticated water or gas pipeline systems. ZK International Group was founded by Jian Cong Huang and Guo Lin Wang on May 13, 2015 and is headquartered in Wenzhou, China.