At the Mobile World Congress Show, Chinese technology company Lenovo unveiled two new laptop concepts, the Lenovo Yoga Solar and the Lenovo ThinkBook.

The Lenovo Yoga Solar features solar panels that can extend the battery life from solar power. As reported by CNBC, “The idea is that the solar power can give the user an extra bit of battery when the device is running low and there may not be access to a charging point.”

The ThinkBook “is a laptop with a foldable screen. When fully unfolded, the screen is an 18-inch display. The screen can then be folded in half horizontally to create two screens — one on the front and one on the back. The entire display can be folded down flat so the laptop turns into a tablet-like device.”

While they are not commercially available now, “the world’s biggest PC maker has a history of showing off imaginative concepts with some becoming reality.”