This research aims to study the environmental management’s competency level and comparative study of environmental management processes of 2-study group between the 7-business sector in listed companies of the stock exchange of Thailand (SET) and Industrial companies in Maptaphut industrial Estate in Rayong Province (Maptaphut). Analyzing 7 organizational factors and 13 environmental management processes factors with 188 sub-issues affecting the environmental management’s competence level, the sampling data collected and statistical analyzed from ...