Students who have ever used 10 players, regardless of its quality, safety, and four other people, regardless of the brand of the product and the price in the purchasing decision.
Students used to have 10 people, regardless of quality, safety is primary and four other people, regardless of the brand of the product, and as an aid in making purchasing decisions.
Students who use a 10 people consider the quality safety as the core and another 4 people consider the brand of products and price make purchasing decisions.