Chinese companies are making a big statement at the world's largest consumer electronics show, CES. But there's also some controversy. At the event, Chinese smartphone maker Huawei was expected to announce a deal to partner with US carrier AT&T. But that has fallen through. According to a Reuter's report, the US telecommunications giant was pressured after members of the US Senate and House Intelligence Committees sent a letter last month to the US Federal Communications Commission, citing concerns over espionage. Mark Niu has more.

At CES, Huawei CEO Richard Yu tells a keynote audience why its new Mate 10 Pro smartphone is more advanced and more secure than both Apple and Samsung devices. He unveiled a special version designed by Porsche and even introduced Wonder Woman star Gal Gadot as Chief Experience Officer.

But then Yu broke from the script addressing telecom giant AT&T's last minute decision to pull out of a deal to carry Huawei phones in the US.

RICHARD YU CEO, HUAWEI BUSINESS GROUP "We cannot selected by carriers. I think is a quite big loss for us and also for carriers. More big loss is consumers. Because the consumers don't have this best choice in the market."

But that won't stop Huawei from selling the Mate 10 Pro online and at US stores, starting in February.

Other big Chinese companies using CES as their launching pad include Lenovo, which ventured into new product categories like personal assistant-driven smart displays and a standalone virtual reality headset called the Mirage Solo.

MARK NIU LAS VEGAS "And for the Motorola Moto Z phone, Lenovo has just released this Vital Moto Mod. Let's see how this works as I stick my finger in."

In minutes, it can measure my blood pressure, heart rate, respiratory rate and how much oxygen is in my blood. It can also take my body temperature without touching my skin.

CHRISTIAN TEISMANN NORTH AMERICA PRESIDENT, LENOVO "If you think about the new categories of online diagnostic, online health prevention, it's a huge market that opens up for something like this."

MARK NIU LAS VEGAS "And CES is all about showing off technology that should make our lives easier. Hopefully, long gone will be the days when I have to lug around stuff like this at the airport. I can just set it aside. My friend Difei can walk around with a joystick in his hand and his suitcase will follow.

The Puppy1 was created by Shanghai headquartered 90Fun and incorporates technology from Segway.

DIFEI WU PRODUCT MANAGER, 90FUN "This has two, six-inch wheels that can self-balance which is the first suitcase in the world to do that. With the auto following feature you can stand behind or in front. So this is another totally unique design."

Puppy1 can be tracked via GPS and also stops if it bumps into something - important features as increasing traffic from new technology inevitably crosses our paths. Mark Niu, CGTN, Las Vegas.