Leader Metal Industry Company Ltd is an American-owned & Invested company. The company was established in 1989 and located in the Longshi District of Wuguishan in Zhongshan City, Guang- dong Province, China. In 2001, the ......Leader Metal Industry Company Ltd is an American-owned & Invested company. The company was established in 1989 and located in the Longshi District of Wuguishan in Zhongshan City, Guang- dong Province, China. In 2001, the company became a member of Marmon Retail Services Company a division of The Marmon Group. The company has over 2100 employees,and 110,000 square meters of land that includes 60,000 square meters of building space.