According to the enterprise data, Qinglong Economic Development Zone Construction Investment Co., Ltd. was established on February 8, 2007, and its business scope includes investment planning, construction and management of the development zone. Planning, construction and management of small and medium-sized enterprise entrepreneurship counseling base; Construction and management of socialized service system for small and medium-sized enterprises; Construction, operation and management of transportation, municipal public utilities projects and shantytown renovation projects; Civil engineering architecture; Urban infrastructure construction; Land consolidation; Land reserve and development services; New rural construction and urban-rural integration; Property management services; Heating service; Garbage disposal; Sewage treatment; Comprehensive development and utilization of tailings pond; Sand and gravel processing and sales (projects subject to approval according to law can only be carried out after approval by relevant departments) * *