Full coverage: 2016 Rio Olympics

Well, for more on the presence of Chinese companies at the Olympic Park, we are joined now in the studio by CCTV's Jin Yingqiao.

Q1. Tell us more about the bigger picture here of Chinese companies at the Rio Olympics.

You don't have to look very hard to see that Chinese companies are everywhere in Rio from mascots, to mosquito nets, to clothes everywhere. Vinicius, the official mascot for this year's Games, around 2 and a half million of them have been manufactured by a company owned by a merchant from Wenzhou in eastern China.

In fact, the company is the only one in the world that's worked on three Olympic Games since the 2008 event in Beijing. During the opening ceremony, there was of course the obligatory fireworks display which lit up Maracana stadium unsurprisingly, 80 per cent of those were made in central China's Hunan province. And during the Games themselves, perhaps the most prevalent Chinese name is 361 Degrees, the Chinese sports clothing manufacturer. IOC officials, volunteers, support staff can have all been seen wearing the brand hardly surprising since 361 Degrees supplied over 100 thousand items.

Chinese companies also have a presence when it comes to equipment. The Taishan group has provided close to 10 thousand items for events like judo, track and field, and cycling. However, for a country that rides so many bikes, China isn't especially well-known for manufacturing them. But that didn't stop Taishan spending 5 years on research to develop and produce a new carbon fibre material that exceeds international standards. In weightlifting, the company ZKC from the northern Hebei province became the sole supplier of weightlifting equipment for the Rio Games.

ZKC beat out its Japanese competitors hich had dominated this area for 6 Olympics in a row. Chinese companies have also provided everything from rowing boats and LED screens to water heaters and even the hoists that helped construct the venues.

Q2. What can you tell us about China's hi-tech products at the Games?

OK, a prime example of this is subway line 4 in Rio which was one of the biggest infrastructure projects for the Games. It opened this month, and the trains are made by the Chinese company, CNR . This is the first time that trains made in this country have been used at an overseas Olympics and around 300,000 passengers ride in these trains every day. These extra trains has also meant that there are around 2000 fewer cars on the road during rush hour.

The line has also cut the commute from downtown Rio to the Olympic Park by half an hour. The trains are made from stainless steel, and are humidity proof. All the compartments are fitted with surveillance cameras for security. And on the subject of secuirty, 90 per cent of the security scan equipment being used in Rio comes from the Chinese company, Nuctech. Another company, Dahua, from the eastern Zhejiang province has provided surveillance cameras.

Its Brazilian branch stood out from competitors like Panasonic and Samsung, and they provide over 80 per cent of security installations, for example, 360 degree HD cameras. So for example, when there's quick movement of people or vehicles driving in the wrong direction the cameras can quickly recognize this and generate an alert. Environmental protection has also been taken into consideration. Utensils used in the Olympic Park are made by a company from Wuhan, using materials like bamboo to make bidegradable items and more than 2 million of them are in use there.