About Us


COT’s policy has focused on quality of works and client’s satisfaction since the company’s establishment. Realizing the essence of Quality Management System in improving the company’s work, COT has been implementing Quality Assurance in the whole organization since 1998 as follows:

  • Preliminary Investigation
  • Feasibility Studies
  • Environmental Impact Studies and Assessment
  • Master Planning
  • Preliminary and Detailed Design
  • Cost Estimation and Preparation of Tender Documents
  • Quantity Survey
  • Project Management and Cost Control
  • Construction Supervision and Management
  • Operation and Maintenance
  • Management Information System (MIS)/Geographic Information System (GIS)
  • Program / Project Monitoring and Evaluation