With a scale of 200Ha, close to the coast with complex geology, technological equipment with super heavy loads is a challenge for our foundation designers. The solution of the Secant pile, prestressed concrete pile, and sulfate-resistant concrete which were selected by the team to be included in the project is one of the technical highlights of the project. With large and important items that have been trusted by the Client to design and construct, we put them into operation in absolute safety.(Design management)