In order to get interaction from your Facebook followers, you should create such content that they will find interesting to like or share. It is difficult to give you concrete examples as you didn't provide the information what kind of a product you have, but I will fine an example of a random business to give an idea of what I mean to say. Let's say, you sell kitchen gadgets to improve the functionality of people's kitchen. Then, apart from posting pictures of products and the information about them, you could also share some design ideas how these gadgets can suit the interior of a kitchen, as well as some recipes of interesting dishes that could be cooked using these gadgets. This way, people will be eager to share such content with their friends or just to post it on their pages to save the ideas for the future. I hope this example explains the way you could think of promoting your products and business in common.