Deland is a service provider with Grade I qualification for operation of pollution control facilities (industrial wastewater and domestic sewage), and Grade II qualification for treatment of industrial waste gas, industrial solid waste, and automatic continuous monitoring (water and gas). The company provides services for operation of water treatment and environmental protection facilities through cooperation by contracting. With the deepening marketization process of environmental protection, operation industry of environmental protection facilities grows up gradually in China as one of the emerging environmental service industries, and operation of environmental protection facilities has been a commercial service provided by a specialized operation enterprises. Good operation of environmental protection facilities can improve the operation rate of these facilities as well as the standard discharge rate, and operation enterprises can bring their specialty into full play and achieve economies of scale, so as to reduce pollution control costs.