Founded in 1977 by Mr. Alberto Dy Ong in San Jacinto, Pangasinan, Oriental Sales Center and Contractor (OSCCON) began operations from simple construction projects and small-scale construction contracting and followed with the production of aggregates and hot-mixed asphalt. From these humble beginnings, the company steadily grew into the construction industry, delivering quality engineering solutions within the province of Pangasinan.
. By 2003, operations expanded with the establishment of the Malued Office in Dagupan City, strengthening its presence in Pangasinan.
In 2008, leadership transitioned to Engr. Gilbert C. Ong following the passing of Mr. Alberto Dy Ong. OSCCON was at the brink of collapse when Engr. Ong and his wife Mary Grace Go-Ong took over the company. The couple had rebuilt the Oriental Sales Center and Contractor from ashes. Drowning in massive debts, the husband and wife team, together with the hardworking and loyal employees, sacrificed and worked hard to save the company from its imminent fall.
After so much sacrifice, a breakthrough came when the company was awarded its first major government contract, paving the way for larger-scale projects This ushered in a new era of growth, marked by the 2011 expansion into Northern Luzon.
Continuous improvement defined the next decade. The company invested in modern equipment, upgraded facilities, and launched workforce training programs in 2018.
With the closure and non-operation of Asphalt Plants of G. O. Aggregates Inc. in 2018, the Oriental Sales Center and Contractor purchased two brand new Asphalt Plants that started marking OSCCON as the top asphalt producer in the Region.
Between 2017 and 2020, Oriental Sales Center and Contractor achieved ISO 9001 certification, underscoring its commitment to international quality standards.
On 14 July 2025, the company secured its PCAB Category AAA license, affirming its capability to undertake the largest and most complex projects in the country.
Immediately after September 15, 2025, after Engr. Gilbert Ong’s demise, Madam Mary Grace Go-Ong, bravely assumed the leadership of OSCCON as the Chief Executive Officer. Despite her grief from the lost of her husband, she took over the company and started to revolutionize the company’s system and processes.
This was followed in 2026 by certification under ISO 9001:2015, further strengthening its reputation for excellence.
In June 2026, Madam Grace launched the G.O. Group of Companies. A holding company that serves as umbrella company to Oriental Sales Center and Contractor, OSCCON Aggregates and Asphalt Plant, Inc., Goodrich Farms, OSCCON Builders, Inc., OSCCON Doors and Windows Installation Services, Gilbert Ong Foundation Inc. and OSCCON Real Estate Development Corporation.
Today, with the renewal and updating of Oriental Sales Center and Contractor’s PCAB license, we remain steadfast in our mission: To deliver high-quality construction and engineering services through operational excellence, stakeholder collaboration, strict compliance, skilled competence, accountable ownership, and continuous innovation, ensuring safety, reliability, and client satisfaction in every project.
