There is a very competitive new force in the super notebook market. In 2011, sales accounted for only 20% of the mobile computer market sales, which was lower than the expected 30 %. Some suppliers said that the reason why the super itself encountered a downturn in sales is largely It is because the demand for ultrabooks in the European market is too small. Surveys show that European consumers generally favor laptops of 15 inches and above. According to data, 40% to 45% of mobile computers sold in Europe is 15 inches. Model, and the ultrabook does not have such a size at all. The premise of the supplier's conclusions is:. ['The manufacturer did not consider the usage habits of European consumers before production.', 'Superbooks should be designed to produce 15-inch products.', 'Consumption habits of European consumers are similar to those in other regions.', 'European market accounts for a large proportion of the global notebook market.']