Song Da 505 Joint Stock Company is a Vietnam-based construction company. It constructs infrastructures and other civil and industrial structures. The Company is also engaged in the construction and operation of small and medium-sized hydropower plants. In addition, it is involved in the mining and processing of iron ores, stones, sand and gravels, as well as the manufacture and trading of construction materials, such as concrete components and metal components. During the year ended December 31, 2012, 98.49% of its net revenue came from construction activities. As of December 31, 2012, the Company was an affiliate of Song Da No. 5 Joint Stock Company. As of the same date, it had three branches namely 515, 525 and 555. From August 26, 2013 to August 30, 2013, Song Da No. 5 Joint Stock Company has divested all of its stakes in the Company.