Other aspects for new comers, brand loyalty of spare parts depends on spare parts’ necessity. As we know that some of spare parts which involve with security are crucial, so customers will be pleased to pay in high price for greater quality. This type of spare parts can create brand loyalty. On contrary, if that spare parts is not crucial enough customer will not pay much attention on. So they have no power enough to create brand loyalty. To get the highest degree of brand loyalty, venders need to be the only brand official vender. For the customers who buy in high volume like car service center, customers have high switching cost because if they switch to another they will lose business benefit like credit term. Credit term is very important for business because cash make business run smoothly. If credit term period is short, this means that customers have to borrow money from other sources and borrowing is cause of interest which is a big burden for new comers. For retailers like normal drivers, they own low switching cost because most of them by in cash so they are no needs credit term benefit.