Fan Zhendong of China is looking to replicate their success from 2018 ©Getty Images

Nations are set to launch their attempts to overthrow China as champions of the International Table Tennis Federation (IITF) World Team Table Tennis Championships in Chengdu when competition begins tomorrow.

China claimed both the men's and women's titles four years ago and enter the tournament as the first seed of each event.

Olympic champions Ma Long and Fan Zhendong headline the men's team, which are due to meet Slovenia, the United States, Puerto Rico and Thailand in Groupe One.

Recently crowned European gold medallist Dang Qiu of Germany leads the line for the second seeded men's team, who are scheduled to play France.

Brothers Alexis and Felix Labrun, who did not compete in Halmstad in 2018, are due to appear for France.

The two nations are joined by India, Kazakhstan and Uzbekistan in Group Two.

Tomokazu Harimoto, who won the junior singles and team title at the 2018 World Championships, is expected to be pivotal to Japan's success but they will need to first better Group Three opponents Hong Kong, Romania, Iran and Hungary.

Egypt and Czech Republic pose the biggest threats to fourth seed South Korea in Group Four, which also consists of Canada and Saudi Arabia, while Mattias Falck's Sweden are set to compete against Group Five rivals England, Australia and Poland.

Brazil have been drawn against Portugal, Denmark and Slovakia in Group Six and Chinese Taipei, Croatia, Belgium and Singapore complete Group Seven.

In the women's event, Olympic champions Chen Meng, Wang Manyu and Sun Yingsha lead the line for China.

They have also been matched against US and Puerto Rico in Group One, with Canada and Malaysia also set to feature.

Hina Hayata, Miyuu Kihara and Miyu Nagasaki are all expected to make their World Team Championships debut for Japan in Group Two, where they are scheduled to face Hungary, Poland Slovakia and Uzbekistan.

Mima Ito is the only member of the Japanese team that secured an Olympic medal at Tokyo 2020, by bagging silver.

Doo Hoi Kem, Lee Ho Ching and Minnie Soo Wai Yam, who all led Hong Kong to Olympic bronze, return for their country.

They have been drawn in Group Three alongside Brazil, France, Italy and South Africa.

Jeon Jihee possesses the most experience for the South Koreans and they will need every bit as they look to exit Group Four in front of Singapore, Thailand, Luxembourg and Iran.

Germany, Egypt, India and Czech Republic make up Group Five while Romania, Chinese Taipei, Sweden and Portugal have been pickled as the teams in Group Six.

The ITTF World Team Table Tennis Championships are scheduled to conclude on October 9.