To deal with environmental, economic and social problems linked to high consumption and intense manufacturing, Europe, ecological associations propose scenarios for the implementation of the circular economy, without saying how to implement them. Several circular strategies (CS) (reuse, remanufacturing, recycling...) enable to regenerate a product and its components throughout its life cycle. Currently, these CS are not implemented in a systemic way, but in a punctual and individual way. The objective is to deepen the knowledge of the global implementation of several CS. To achieve this, the paper proposes to characterise each CS according to the requirements of the entering and leaving products. This technical characterisation allows us to analyse their complementarities and interactions. This characterisation will be illustrated by the example of remanufacturing and resynthesis. Then, an analysis of our proposal is carried out to show the contributions in order to have a holistic approach of the regeneration.