I'd like to call your attention to our solution for USB extension.
We are the only manufacturer of special integreated circuits for long USB extension cable, which connects USB devices to USB host on distance up to 40 meters. Such cable doesn't require any software drivers or additional power supply. Our ICs require only standard USB, which also provides power for USB device.
This is your unique opportunity to add new product under high market demand. Untill now this market niche is not fully occupated. Production of these cables gives you advantages in competative price.