Now in improving people's living standard, many people to purchase products through the network, and even a variety of products will be in the network to buy. So buy synchronous belt to buy through the network will be no exception, this is because the manufacturers realize the power network, thus by power network development. Then buy through the network synchronous belt have what benefits: first, the synchronous belt low price: the reason with the actual market purchase synchronization said, people are more willing to buy on the network, the key is because network to buy the product price is much lower, and the quality is reliable. So, people are more willing to buy the network. Second, the synchronous belt variety: people buy into the entity synchronous belt, believe to be able to see variety is less, because there is a limit to store, unable to meet the needs of the people. And buy through the network, as long as people need, can be satisfied. Because in the network product variety, so can better meet the needs of the people. Through these learned, why than entity shop, people are more willing to buy on the network. But in order to ensure the correctness in the people to buy, advice to do a good job in understanding before people buy more network is virtual.