By way of continuous quantitative monitoring, User Satisfaction Study can measure satisfaction levels of current products and services, re-purchase rates, recommendation rates, etc., quantitatively evaluate the current product or service, and discover which aspects require most urgent improvement. Satisfaction evaluation is one of important ways to establish customer marketing system. ePanel has a whole research procedure, provides accurate information of customer expectation, satisfaction and loyalty from three aspects of product, price and service. User Satisfaction Study can help our clients to stably improve service quality, to maintain and expand the consumers.