Cttéi is a technology transfer center in industrial ecology located in Sorel-Tracy, Quebec. As an affiliate of Cégep de Sorel-Tracy, Cttéi aims to enhance the performance of businesses and communities through research and the development of innovative approaches and technologies in industrial ecology. The center is guided by its core values of agility, diversity, collaboration, customer focus, and rigor.

Cttéi offers a range of services to help businesses and organizations. These include identifying innovative opportunities for industrial waste valorization, developing clean processes that adhere to the principles of green chemistry, promoting circular economy practices, and facilitating resource sharing through tools like industrial symbiosis. Additionally, they provide services such as physico-chemical characterization of materials and residues, finding profitable and innovative outlets for waste, product development, and support in implementing clean processes and industrial symbiosis.

The center also offers training and conferences on industrial ecology and circular economy. With a team of experts in various fields, Cttéi is dedicated to advancing industrial ecology and contributing to a sustainable future