Analyzes the impact of regulations on the process of the diffusion and development of environment technologies from the perspective of both firm and technology policies. Based on a case study in the Turkish fertilizer industry, observes that regulations and public pressures are the main determinants both in the transfer and in the diffusion of environment technologies, indicating the importance of the institutional infrastructure, namely the interplay among firms, government and nongovernmental organizations. Thus, attempts to integrate the findings of the study and concludes with some technology policy issues both at the micro and macro level.