How we can make a good relation between customer and our company?

Trust, Honest, Fast. these three words are the demand of any client, keep your chart at a high level in these subjects, you will definitely obtain a very good customer relationship.

Engage customers. Become their trusted advisor and request feedback. An open, honest relationship demands clear communication of how each party is performing. If you know where you stand, you can stand stronger.

In brief ,, 

enhance and manage the relation is depends on the value delivered to the customer , then matching customer satisfaction, finally the competitive advantage provided.  

Following are the few points

1)Gaining trust among your customer

2)transparent

3)You should be contactable(Available) to the customer atmost everytime during office hour

4)Maitaining the professional attitude toward customer during customer's angry mood or during the complaint or claims

5)Wishing customer during the festival time/anniversary/birthday etc.

Concentrate on Customer LOYALTY.

As others mentioned, through:

- Trust

- Honesty

- Respect

- Involvement

- Understanding

And then look at other issues like your offers, your customer service, your support....