■ Mainly contracting, surveying, designing, supervising, and consulting services for the following construction works (roads, test courses, airports, distribution facilities, sports facilities, water supply facilities, general civil engineering, general architecture) ■ Manufacturing and sales of asphalt mixtures, etc. / Industrial waste disposal and sales of recycled products ■ Real estate transaction services ■ Management of hotels and golf courses ■ Management of toll roads ■ Soil contamination surveys and remediation works ■ Planning, construction, ownership, and operation of public facilities, etc.