BEIJING - China's soymeal futures hit their highest level in five months on Tuesday, boosted by expectations of tighter supply as the Sino-U.S. trade conflict intensifies.

Worries the United States and China are digging in for a longer, costlier trade war have weighed broadly on financial markets, with Beijing accusing Washington of harbouring "extravagant expectations" for a deal to end their dispute.

The most actively traded soymeal futures DSMcv1 on the Dalian Commodity Exchange jumped as much as 2.4% to 2,798 yuan ($405.44) per tonne, their highest since December last year.

"The market expectation now is the trade war will keep escalating ... Prices are rising as a result," said Tian Hao, senior analyst at First Futures.

China's most active rapemeal futures CRSMcv1 , traded on the Zhengzhou Commodity Exchange, climbed 3.2% to 2,425 yuan per tonne.

Trade negotiations between the United States and China have soured dramatically since early May, with each side taking retaliatory moves against the other. 

"With the developments in the past two days, the trade war is now real. The market mentality has changed," said a trader based in China, declining to be identified as he was not authorised to speak with media.

Reporting by Hallie Gu and Dominique Patton; Editing by James Emmanuel and Joseph Radford) ((Hallie.Gu@thomsonreuters.com; +86 10 6627 1250; Reuters Messaging: hallie.gu.thomsonreuters.com@reuters.net))