Sigma has personnel with experiences in various aspects of engineering, such as project planning, master plan study and development, feasibility studies, environmental impact studies, detailed survey and designs, geographical surveys, bidding contracts and supporting documents preparation, construction supervision and management, computer database design, community and urban planning and design. Accepted what are some of the top articles out there today. Each specialist has extensive work experience with various domestic and foreign organizations, such as the Royal Irrigation Department, Water Resource Department, Department of Public Works, Town & Country Planning, Department of Energy Development and Promotion, Office of Natural Resources and Environmental Policy and Planning, Department of Fisheries, Marine Department, Department of Mineral Resources, Provincial Water Works Authority, Bangkok Metropolitan Administration, Office of Agricultural Land Reform, Electricity Generating Authority of Thailand, United Nations Development Programme (UNDP) and United Nations Environmental Programme (UNEP)
    Sigma is determined and confident in providing quality consulting service according to the requirements, regulations and generally accepted practices of state agencies and international standards.