The registration address of the super-filtering plant (individuals) in the county of zouan is located at no. 804 in wanglong village, the hot spring commercial estate of zouan city, and the registration authority is the market supervision authority of zhao of zouang county, which operates on general items: retailing of car spare parts; sale of specialized equipment for the protection of the environment; sale of gas, liquid separation and pure equipment; sale of the internet (other than the sale of goods that require authorization); sale of paper products (in addition to projects that are subject to authorization under the law, operating on an autonomous basis with a licence)。