We've all been taught never to put our eggs in one basket. You are more likely to achieve higher income if your company offers a variety of different products and services. The good thing is that you don't even need to have knowledge or stock of these extra products and services under your company. Just get a friend that has his or her own business and include their products as one of the things your company deals in. When you advertise your company, include those your friend's products. If anyone asks for those items, simply direct them to your friend, who would act as the head of that department of your company. I personally deal in electrical installation materials at Alaba int'l market Lagos. If you want to add electrical products to your company's profile, call Tony ik on 08024416878.