The registration address of the sant'lesson filtration equipment manufacturing company, ltd., is located at no. 88 of the village industrial roads of the santuan springs and leisure business park of santien city, hebei province, with the registration authority being the market supervision authority of guangan county, the legal entity representing zi shijie, which operates on general projects: manufacture of specialized equipment for environmental protection; manufacture of equipment for dust removal; re-manufacturing of auto parts; manufacture of paper products; technical services, technology development, technical advice, technology exchange, technology transfer, extension; packaging services; general mechanical equipment installation services; specialized equipment repair; sale of specialized equipment for environmental protection; sale of refrigeration, air-conditioning equipment; sale of hydraulic machinery and components; sale of seals; sale of rubber products; sale of gas-compressed machinery; sale of metal products; sale of metal materials; retail sale of hardware products; sale of paper products; sale of plastics; sale of mechanical and electrical equipment; sale of eco-environmental materials; sale of moulds; sale of chemical products (other than licensed chemical products); sale of daily supplies; sale of needle textiles; sale of communications equipment; sale of electronics; sale of outdoors; sale of spare parts for vehicles; sale of valves and rotors; sale of office supplies; retail sale of stationery; sale of construction materials (proprio motu, unprohibited, unrestricted operations except for legally authorized projects)