Customer relations are the overall activities and efforts made by the company to engage its customers and assure a better customer experience. Every engagement you make with your customer is a golden opportunity to build customer relationships positively.
The post-purchase service you offer your customers determines your customer relations. Many companies think that their business goal is reached once they acquire new customers. But that is not true. The real business starts after you start getting customers.
It all depends on the quality of service your offer them after sales and the experience you provide your customers. In short, you need to build customer relationships with an effective marketing strategy.