Everything from autonomous snow blowers to humanoid robots filled the show floors at this year's Consumer Electronics Show (CES) in Las Vegas.

Considered the World Cup of technology, the world's largest personal electronics convention wrapped up on Friday.

Making their tech presence felt at the four-day event were nearly 100 registered companies from Hong Kong, more than half supported by the Hong Kong Science and Technology Parks Corporation (HKSTP).

"So this year, we bring 51 companies from Hong Kong... it's actually a huge growth compared to last year. Last year we have about 18," says Derek Chim, Head of Startup Ecosystem at HKSTP.

HKSTP-supported companies brought in three CES Innovation Awards.

One of those, Vidi Labs, demonstrated how their wearable device - with AI-driven software - could describe the surrounding environment for a visually-impaired user.

"This actually proves a lot that the route that we are on is actually the right one, because a product like this not only is for Hong Kong, it's actually for the rest of the world," said Turzo Bose, co-founder & CEO of Vidi Labs.

Also at the Hong Kong Pavilion, South Korean Minji Seo - who earned her PhD in Hong Kong - displays technology that rejuvenates your eyeballs with hot yoga therapy. It's intended to help people with dry eyes.

"We create a vacuum seal, using the silicone band around the goggle, and that's the chamber that we are controlling the temperature and pressure. Our main goal to join this event was to, like, verify whether we have a market here. And we definitely verified it," said Seo, founder of Ooley Care.

Another Hong Kong exhibitor, Michael Wong - a veteran of the Hong Kong hair care industry - uses a scanner to take images of your hair and scalp, and provide an analysis and recommendation for the right shampoo, conditioner and treatment.

"We use over millions of pictures to train our AI models so that's why it's accurate, over 90 percent. So everything just can do it within three minutes. So every American has their hair growth again, said Wong, founder and CEO of HairCoSys.

His showmanship helps his startup, HairCoSys, stand out among the more than 4,500 exhibitors.

But so do products with unique compositions.

Fever Chu, co-founder of Zence Object Technology, displays everything from a TV remote that integrates recycled tea leaves, to a calculator frame composed of coffee grounds.

"We are using their waste and turn it into new material and give back to them. Somehow we can help them to promote their waste product, the material, to the bigger market," said Chu.

Chu says their products have drawn plenty of interest.

"Last night... over 60 [emails] within two days to the potential clients."

Chu says he has already heard back from many of them, confirming his belief that companies around the world want a greener supply chain.