Associated with sustainable technology, in this paper, we have developed a prototype system for evaluating life cycle engineering of chemical products. For this purpose, giving a whole framework on tile G2 software known as a graphical development environment of intelligent system, we have built a product life cycle model as one of its element technologies. Practically it is described as an object oriented model having a hierarchical structure like IDEF0 model. Furthermore, due to the interdisciplinary nature of the problem-solving, highlighting an importance to facilitate a continuous improvement and to employ distributed information technologies, we also engage in developing a few related element technologies. Through a case study associated with the farm sheets, we have revealed that the developed system can analyze easily various kinds of life cycle scenarios just by giving certain values via a graphical user interface, and support strategic decision making on the life cycle engineering of chemical products.