First let us establish the importance of social media presence.
in the image below you can see how much social media can affect the growth of your business.

you might say but I already have a facebook page and it is not generating sales or bringing in new customers. 

there are two possible reasons for that, the first is that the social profiles that represents your organization or company isn`t built proberly

the second is that you are not marketing your content on social media right

the things you need to do is 
1) identify the right social media platform for you
2)create the best content that represent your company and show case your products/services

3)create targeted ad campaigns to reach your customers
4)interact with your customers online 

you can benefit from your page by generating massive leads to your website as well.