Chinese competitors have managed to clinch gold medals in car painting, fashion technology, welding and manufacturing technology.
They are the first gold medals for China at the world's largest skills competition.
Yang Jinlong, gold medalist in car painting, says he hopes to share his experience with the younger generation here in China.
"Truthfully, I don't think I'm the best in this field. There are many more people in China who are better than I am. I still have a lot to learn from people with more experience than I have. But in the same respect, I do want to use the skills I've learned here to help others."
This is the third time a team from China has attended the Worldskills Competition.
32 young people from China have taken part in 29 different skills competitions.
On top of the 4 gold medals, the Chinese team also won six silver medals, three bronze and 12 other awards.
Simon Bartley, president of WorldSkills International, says their showing is a testament to China's vocational education.
"I think if that continues, then the Chinese economy will grow at an even greater pace than it is at the moment. And, actually the young people of China will be able to satisfy their dreams."
This year's event in Sao Paulo has attracted around 12-hundred competitors from 59 different countries and regions.
South Korea has remained the reigning champion of the competition.
Tang Tao, vice-Minister of Human Resources and Social Security, says China's participation in the WorldSkills competition should help continue the development of vocational training in China.
"Participating in such an event can not only help improve the skills of technicians but also increase their competitive awareness. We are considering creating our own domestic skills competitions to meet the growing demands from our fast developing economy and society."
The WorldSkills Competition is billed as the "Olympics of Skills."
The competitors, aged between 23 and 25, are selected from WorldSkills member countries and regions.
China formally joined the organization 5-years ago.
For CRI, I'm Luo Bin.
