There is no such business as lucrative/profitable as importation and exportation business.Try to find out this fact: every mega rich man in the world is involved in importation and exportation business in one way or the other.
Moreso this business concept requires no much expertise or exceptional skills-it is all about buying and selling commodities across borders with foreign/hard currencies as a means of exchange.

There are many commodities good for import and export.
importable goods:                                                                                        exportable goods
-stationery products                                                                                         -frozen shrimps(very lucrative)
-phones,flash drives,laptops or other electronics                                            -Charcoal
-computer inks                                                                                                 -african food stuff
-chemicals and many others but to mention few                                             -many natural resources
                                                                                                                        -crude oil,lubricating oil and other oil products   
for more info,pls contact:
afolabi  08035125470(call or sms)
email: startekglobal@yahoo.com

Good talk bro, export business is really growing. visit the blog link below for good info on starting it.