How small products become billion dollar brands?

Through " Word of mouth" , " Communication", and " Face book", " Twitter", and also, " Customer feedback".

First you have to turn that product to a brand. It will take some time, but If you need to do it in short period ; recruit a classy Sales And Marketing Manager. Then think about your competitors and see what they do not see in the market. Shoot your first shot as a sniper with the help of your buddy with binocular ( Sales & Marketing Manager) to a specific pre categorized  target group. Take a risk, do things what others don't do,think different some day you will make it.

Its not about the size or the quantity but quality that decides a brand. All billion dollar brands impact the lives of their consumers in a meaningful way because of their quality and utility value. That is what makes them stand out from the rest.

thanks 

Products and brands are2 completely different things. 

A product is a tangible thing. 

A brand Is virtual. At best it is an experience.