Primary Structures Corporation laid its foundation in 1951 as William C. Liu Construction, a single-family-owned construction company built through hard work, determination, and unyielding professionalism. They became the contractor of choice for Cebu’s leading corporations and gained a solid reputation for delivering prompt, affordable, and quality products and services.

With more than 500 proudly completed projects nationwide and a team of around two thousand Primary Structures employees, the company continues to expand with a focus on innovation and sustainable construction nationwide. Ongoing projects include the T3 Port Modification project, which strengthens Mindanao’s port infrastructure.