This study visualizes the complicated dynamic lot-sizing (DLS) model to present the scattered trend of feasible production policies through the binary formulation framework. The minimum total costs curve and maximum total costs curve are plotted visibly under the demand patterns with well-defined termination point. Moreover, some of the significant heuristics are used to reflect the sensitivity interval through all demand patterns and the appropriate range of sensitivity interval could be recognized by means of several indices. Managers could decide the appropriate range of sensitivity interval and select an appropriate heuristics to simplify the processes of lot-sizing decisions.