PT Wijaya Karya (Persero) Tbk is an Indonesia-based company primarily engaged in provisioning construction services. Its business is classified into five segments: construction, mechanical and electrical, industry, real estate and mining. Its construction segment comprises civil construction, including road, bridge, airport, seaport and barrage, and building construction, including residential and commercial building. Its mechanical and electrical segment comprises two business units: energy, which comprises engineering, procurement and construction (EPC) services provisioning and investment in power plants, and industrial plant. Its industry segment comprises industrial precast concrete manufacturing and steel fabrication. Its real estate segment includes residential and commercial building development, property management and construction services provisioning. Its mining segment is operated through PT Sarana Karya, which is engaged in asphalt mining in Buton Island, Indonesia.