The Thailand Environment Institute Foundation (TEI) is a non-profit, non-governmental, organization, focusing on environmental and sustainable development issues. It was established in May 1993 in order to drive sound environmental policies; assist community on natural resources management; raise public awareness on environmental and sustainable development; and provide training to strengthen environmental management capacity. TEI strives to develop knowledge, serve as a reliable and modern sources of information, and promote collaboration and coordination among multi-sectoral partners on the environment and sustainable development. Collaborating closely with its partners such as private sectors, government agencies, local communities, civil society partners, academia and international organizations, TEI has been contributing to a number of environmental policy formulation and implementation, and meaningful sustainable development progress in Thailand.