Huanghua town is located in yingde city, Guangdong Province. The whole town has a jurisdiction area of 567 1km2 and a population of 120486. Mineral resources are very rich. There are 39 proven mineral varieties, among which sulfur, iron, gold, silver, copper, zinc, coal, limestone, granite, Shi Ying, etc. have large reserves, especially limestone, which has the largest reserves (more than 60 billion tons) and high calcium carbonate content and good quality.