Therefore the market has supported the customers for easily find spare parts and maintenance of vehicles. Besides, some of competitors have served customers with the standardization of services, some have operated for a long-time. Thus the concern points of U.Yont Charoenmotor are product diversification might not have served enough compared to the competitors and the reliability from the customer’s opinion that delivery system is not good enough to be on schedule. Thus, there is a possibility that existing customers may switch to other alternative.