Based on three marine protection works carried out by CCCC-FHDI in Pakistan during recent years, this paper analyzes the process of a design company in winning a project, optimizing a project, improving the value of a project by its own advantages, and demonstrates the advantages of a design company, as the leading party, in executing the EPC project in the overseas engineering market, which is famous for its complicated procedures and multivariate circumstances. Taking account of distinguishing features of design, construction and other companies among CCCC, this paper also points out that EPC project leaded by a design company is the best model for CCCC to develop its market and upgrade its branding in the overseas engineering market.