A total of six projects and six high-tech companies won prizes at the sixth Nano Star innovation and entrepreneurship competition on Monday in Guangzhou High-Tech Industrial Development Zone, Guangdong province.

The event was co-organized by the national nanotechnology innovation research institute of the Guangdong-Hong Kong-Macao Greater Bay Area and the National Center for Nanoscience and Technology, as well as authorities including the Department of Science and Technology of Guangdong, the Guangzhou science and technology bureau and the administrative committee of Guangzhou High-Tech Industrial Development Zone .

The winning projects covered a range of nano-related sectors including nano-optical devices, flexible graphene batteries, intelligent new materials and biological materials, according to organizers.

The sixth Nano Star innovation and entrepreneurship competition opens in Guangzhou High-Tech Industrial Development Zone, Guangdong province, on Monday. JIA ZIHAO/FOR CHINA DAILY

After several preliminary rounds, 29 projects competed in the final with nearly half of them related to new-generation information technology, organizers said.

The winners were assessed under the categories of technology, industrial value and commercial operation.

The event is aimed at discovering the latest innovations in nanotechnology and to promote the commercialization of nano-technological achievements, local officials said.

Among the winners was a holographic display project developed by a nanometer optical device team.

Started in April, the contest attracted more than 200 projects from all over the country.

This year, the event saw an increase in research results and products of key technologies including high-performance magnetic cores, organic semiconductors, high-energy-density storage materials and devices.