The registration address of zheng zhengyu village, the head town of zhengyang city, is zheng xing city market supervisory authority, with legal representatives, and includes general projects: construction of water-proofing products; sales of water-proofing rolls; manufacture of insulation and soundproofing materials; sale of insulation and soundproofing materials; manufacture of plastics; sale of plastics; manufacture of paints (without dangerous chemicals); sale of paints (without dangerous chemicals); manufacture of textiles in industry; manufacture of rubber products; sale of paper products; sale of paper products; sale of chemical products (other than licensed chemical products); sale of petroleum products (other than dangerous chemicals); manufacture of specialized machinery for the production of construction materials; leasing of construction machinery and equipment; licensing of technical services, technology, technical advice, exchange, technology transfer, technical promotion (in addition to legally authorized projects, independently of a legally authorized trade licence); licensing of construction activities; subcontracting of construction services; import and export of goods; import and export of technology (subject to the approval of the law, subject to the approval of specific projects)