The company was founded in 1948 and listed on the Shenzhen Stock Exchange in 2012. The company has special grade general contracting for highway and municipal construction, grade 1 general contracting for construction, water conservancy, hydropower and electricity construction, grade 2 general contracting for port, aviation, railway, mechanical and electrical construction, professional construction contracting qualifications for roadbed, pavement, bridges, tunnels, steel structures, etc., and also has qualifications such as grade A engineering survey, surveying and mapping, design, supervision and consulting, etc., and is qualified as a general contracting enterprise for complete foreign aid projects. The company is mainly engaged in road and bridge engineering construction and maintenance construction business. The company's main products are road and bridge engineering construction business and products, and highway maintenance engineering construction business and products. During the reporting period, the company received honorary titles such as Shandong May 1st Labor Award, Shandong Worker Pioneer Number, Provincial Advanced Unit for Open and Democratic Transportation System Management, Nanjing May Day Labor Award, National Transportation Industry Five-Star Unit, 2020 Top 50 Competitive Enterprise in the Construction Steel Structure Industry, 2020 China Construction Steel Structure Industry (5A) Honest Enterprise, China Steel Structure Gold Award, and Provincial Excellent “Prefabricated Construction Industry Base”. Up to now, the company has won two National Science and Technology Progress Awards, three National Quality Engineering Gold Awards, six Luban Awards, six Ministry of Communications Quality Engineering Awards, nine Li Chun Awards, two Zhan Tianyou Awards, and one World Pedestrian Bridge Award.