No matter what is related your website about, your website should use CTA buttons, in order to push your visitors
to some activity / action. Such CTA should be for example to follow your website, to write a review of your company, to purchase some goods from you. One of the easiest way how to use CTA is for example to compose unique e-mail signature, where the links to your social networks resides, or the link to GMB (Google My Business) review form is located.
Each time the e-mail message arrives, it is just simple to click to the banner having the CTA statement, and to make a review of your company. Usually, the higher the review is (and their count), better is page is located in search engines.
If you also have a company pages on social networks, recipient can just follow-up and monitor updates. Be aware, that CTA buttons does not have to be purely Order, Call us, Contact us, Blink at us, Save $, Find out, Try, ...