Over 200 Shenzhen enterprises have ranked among the Guangdong Top 500 Enterprises for 2021, according to a list released by the Guangdong Provincial Federation of Enterprises and Guangdong Entrepreneurs Association.

A wireless electronic thermometer developed by a Shenzhen-based high-tech company has played a huge role in COVID-19 pandemic prevention and control for the Beijing 2022 Olympic Winter Games, Shenzhen Economic Daily reported.