Chinese companies released several potential Covid-19 vaccines at the Beijing fair, expecting them to be licensed later this year.

Potential Covid-19 vaccine samples developed by Sinovac Biotech and China National Biotechnology Corporation (CNBG) are displayed at the ongoing International Trade and Service Fair (CIFTIS) at

The manufacturers said these vaccines have yet to hit the market, but have expressed hope they will be licensed after Phase Three is completed later this year.

CNBG announced last week that Serbia will test two vaccine samples developed by the CNBG's Wuhan and Beijing unit, while Pakistan will test its potential vaccine in Beijing.

"CNBG's third phase Covid-19 vaccine trial is expected to include 50,000 people from about 10 countries. The process has already begun in the United Arab Emirates, Bahrain, Peru, Morocco, Argentina and Jordan",

Zhang added that many countries have expressed interest in ordering a total of 500 million doses of their vaccine.

Helen Yang, director of global strategy and business development for Sinovac, said two more countries agreed to Phase Three testing with a potential Covid-19 vaccine called CoronaVac, but declined to be named because of the announcement.

Although a final phase of testing is underway to ensure safety and efficacy, China has licensed the use of potential Covid-19 vaccines from Sinovac and CNBG in emergencies for high-risk groups.

Yang said several tens of thousands of people had injected CoronaVac through the emergency program.