Index International Group Public Company Limited operates as an engineering consultancy company in Thailand. The company provides a range of services in specialized fields, such as project planning; city and district planning; architectural design, involving landscaping and architecture; engineering design comprising structural electrical, mechanical, transportation, sanitary, geotechnical, environmental, and water resources engineering. Its services also comprise master planning in the fields of site reconnaissance and survey, socio-economic survey and analysis, and feasibility analysis; and complete design and engineering services for construction and contract bidding, such as preliminary engineering design, detailed engineering design, scale models when required, specification and drawings, bills of quantities, other technical description required for procurement and construction, and geographic information system. In addition, the company offers project management/construction supervision services comprising provision of construction inputs to architects-engineers through the design and engineering stages; construction management of turnkey, design, build, and concessionaire projects; handling of contractual procedures necessary for phased construction; procurement services for materials and equipment, including the expediting of procurement, shop inspections, and shipping; schedule and quality control services; and value engineering services. Further, it offers and design–build services, which includes plan and design environmental education structure, control cost of project, provides advice on development of products storage systems, and provides consultation on design pf project details, as well as care of design details comprising system work of project. Index International Group Public Company Limited was founded in 1983 and is based in Pathumthani, Thailand.