Figure 1 above shows the importance of identifying patterns of sales for core products and customer background to understand the profile of loyal customers. It is also necessary to analyze the potential buyers who have never made a purchase, along with their characteristics to understand the buying opportunities that exist. The last part is to use existing data to understand buying opportunities in the future resulting in a projection of potential customers. This analysis is important for SMEs considering that they rarely identify the pattern of their sales and customer profiles (Haryanto, 2007). By understanding the patterns of sales and customer profiles combined with anticipated future needs and desires, the opportunity to gain market potential will become large, which means an increase in the performance of the SME marketing.