It is important to remember that I am Canadian. I don't know enough about how things work in Nigeria. I used to sell computers starting in 1989 (owned a company), so I can talk about selling products in general.

One of the first things I would ask you is to copy and paste your message into a regular post. Currently, my upvote is only worth 0.004. If you post the same message, I can respond the way I did before. It is like advertising and promotion. The more people can be exposed to your products, the greater interest we can generate.

The second thing I would ask would be for you to join steemit.com and revise the text so it would be an appeal to that community. While you are at it, there are some initial posts they encourage you to make. I created an article on that site, echoing the one on Hive. Here are a few communities with several members in Nigeria, so potential investors and customers.

What would the price be for each of the devices? How long does it take to manufacture each?

Recently I started using Hive account@tipu on Steem.

Currently, paying $13.46 (5.321 SBD) is being upvoted to about $18.49. That is roughly 37% profit every seven days. So far, this is about the best investment I have found in the Crypto space.