GTI is a leading provider of technical services. Using innovative concepts and integral solutions, GTI sets the tone for the success of its customers in the industry, building services and infra sectors. Its activities range from design to realisation, maintenance and management, in a large variety of technical disciplines.

GTI serves its clients through a network of branches, collaborations and strategic alliances. GTI possesses the knowledge, experience and scope required to carry out a wide variety of projects. Projects that range from small to large and from simple to complex. Key concepts in our services are reliability, quality, flexibility and responsibility. These notions are fleshed out on the basis of intelligent commitment and expertise.
GTI has approximately 7,500 employees and consists of a network of companies that focus on regional markets, specific market segments and specific technologies. The Netherlands is GTI's home market, but the company is active worldwide wherever required by its clients.
Together with the companies Axima, Elyo, ENDEL, INEO, Tractebel Engineering and Fabricom GTI, GTI is part of GDF SUEZ Energy Services.

GDF SUEZ Energy Services, European leader in installation and technical services, develops value added solutions for its clients in the industry, the building services and the infrastructure as for design, realization and maintenance of technical installations along with energy management and long-term multi-technical management. GDF SUEZ Energy Services employs 66,000 people and achieved revenues of € 10.7 billion in 2006. GDF SUEZ Energy Services is one of the four business lines of the quoted international industrial group GDF SUEZ.