Development Advance Solution Co.,Ltd. is a Korea-based company mainly engaged in the production and sale of road safety facilities. Along with subsidiaries, the Company operates its business through three segments. The Social Overhead Capital (SOC) segment is involved in the manufacturing and sale of road safety facilities. The road safety facilities include general guard rails, high specification guard rails, rigid differential guard rails, steel barriers, open protective fences and sound barrier walls, among others. The Building Material Business segment manufactures and sells deck plates and building materials. The New Renewable Energy Business segment operates the solar power generation facilities.