China launched a fresh WTO trade dispute against the United States Tuesday, challenging anti-dumping measures taken by Washington against Chinese products.

The complaint, filed on the first day of a crunch World Trade Organization summit in Bali, takes issue with the way Washington assesses whether exports have been "dumped" at unfairly low prices onto the US market, the global trade body said.

China alleged that the United States, in violation of WTO rules, was continuing a practice known as "zeroing", which calculates the price of imports compared to the normal value in the United States to determine predatory pricing.

The United States has repeatedly lost cases before the WTO over its calculation method and has said that it had phased out the practice.

As a first step in the trade dispute process, China, which did not reveal which products were involved in the case, requested dispute settlement consultations.

Washington now has 60 days to try to settle the dispute before the process moves on to arbitration.

The case was just the latest of a string of WTO complaints the world's two largest economies have lobbed against each other.

Tuesday's complaint is the eighth China has filed over US trade remedies, and the fourth so far this year, WTO said.