With the hot topic of the climate change effects a desperate change is needed in the world ofthe national and global industry. A good start is an environmental management system, EMS.The main focus of the on-going process of an EMS is to organise the company’s work, to decrease the use of raw materials and energy, and to severely reduce pollutions to air, water and land. The EMS is a part of a sustainable development and a valuable tool for everyindustry who wants to better their image and keeping environmental concerned customers. Asia and Thailand are growing markets where SME and large-scale industries have started tointroduce ISO standards. The top management of these organisations have opened their eyes to the demand of the clients regarding less environmental impact from their products and services. The motive for this study, carried out as an MFS is to get an insight of the Thai industries and how well they have implemented their EMS. / www.ima.kth.se