6. Conclusion
Considering the industrial symbiosis in the product development can contribute not only to the industrial symbiosis development of the park in which the company is inserted, but also to achieve positive financial results, since there is the possibility of using cheaper materials and utilities, as well as the commercialization of by-products and waste generated.
The three proposed guidelines application, whether in DFE or DFIS, can also be used to identify opportunities for products that already exist, not only for the new products development. That is, the existing products would be changed in order to consider the industrial symbiosis in its production.
Two main contributions were presented. The first is the three guidelines proposal for considering the industrial symbiosis in product development. The second is the systematization of these guidelines in a method for the DFIS application. However, this work is restricted to the proposals and exploration of the possibilities presented. So far, no empirical or practical work has been done regarding the proposed theme.