SDP JSC, formerly Petro Song Da Trading and Investment Joint Stock Company, is a Vietnam-based company engaged in the construction materials industry. The Company trades construction materials and supplies, such as cement, steel, iron, stones, gravels, sand and concrete additives, as well as petroleum and construction machinery, equipment and vehicles. It is also involved in construction activities, with projects including institutional, commercial, residential, manufacturing buildings and hydropower plants. Other activities include freight transportation, sand mining and concrete pile manufacture.