If you want to import anything into ghana. you must first know what the rules of import and exports
You can find such information at http://www.startupoverseas.co.uk/starting-a-business-in-ghana/exporting-and-importing.html
then go to http://alibaba.com and search for what ever you want to import.
contact the manufacturer, and get samples of the product. if after reviewing the product, you are comfortable with it
then order in large quantities and boom!!! you are in business