ATT Consultants Company Limited is a Thai consulting company as well as a subsidiary of TEAM Consulting Engineering and Management Public Company Limited. The company was established in 1990 with a registered capital of 25 million baht and average operating result of 200 million baht / year. Many experienced Thai engineers are gathered to serve as an engineering consultant in the field of  structure, architecture as well as electrical and mechanical energy. ATT has worked with agencies from both public and private sectors and accomplished many successes.

In 2003 ATT has adopted the ISO 9001: 2000 quality system as a guideline for management by starting the preparation and development of the quality management system ISO 9001: 2000 increased in the yard on March 10, 2003 and has Received ISO 9001: 2000 Quality Management System Certification on August 29, 2003 by United Registrar of Systems (Thailand) Limited (URS), a quality system accreditation body that has been accredited by the National Accreditations Body (NAC). Accredited by the International Institute of England (United Kingdom Accreditation Service: UKAS).

Nowadays, ATT has been managed under ISO 9001:2015 since December 1st, 2017.