First you need to know your product, because and advantage in which aspect, and then according to market research, the majority of customer users a, to understand some of their views on this product a, if you can, you can better into each customer, interested in seeing them is waiting for this product, the most important thing is still according to their own products, more to expand the advantages of it, continuous innovation is the best lasting! The most important thing is to expand its advantages according to its own products, and continuous innovation is the best lasting method.