The registered address of Happy Manganese Sand Filter Material Factory in Linwei Town, Mashan County, Nanning City, Guangxi Province is Datang Manganese Mine Station, Datang Village, Linwei Town, Mashan County. The registration authority is Linwei Market Supervision and Management Office of Mashan County Market Supervision and Administration Bureau, and the legal representative is Zeng Xiangming. The business scope includes the processing and sales of manganese ore filter materials, quartz sand, pebbles, and white mud (projects that require approval by law can only be carried out after approval by relevant departments)