According to the enterprise data, Zhangjiakou Yuxian Yuan Heng Construction Development Group Co., Ltd. was established on 2009-01-KLOC-0/9, and its business scope includes the operation and management of state-owned assets and state-owned enterprises. Mineral land resources development, old city reconstruction, real estate development and management, property management, landscaping projects, ecological environment construction, transportation, water conservancy and hydropower project construction and management; Development and construction of domestic water, sewage treatment and recycling projects, urban garbage treatment service projects, solar energy, wind energy, biomass energy projects, tourism resources, industrial enterprises, agriculture, land, urban management, agricultural products processing, health care industry and rural revitalization projects; Engineering project management services; Housing lease; Sales of office supplies, building materials and construction machinery. (Projects subject to approval according to law can only be operated after approval by relevant departments)