Guizhou Hongxing Development Dalong Manganese Industry Co., Ltd. was established by the listed company Hongxing Development (600367) in March 2002, which acquired the bankrupt and closed Dalong Chlor-Alkali Magnesium Plant of the Guizhou Mercury Mine System through public auction. become. The company is located in Dalong Development Zone, a provincial-level economic development zone in Guizhou Province, covering an area of 580,000 square meters and has more than 1,000 employees, most of whom are laid-off and reemployed workers from the former Guizhou mercury mine.