The business deals reached between China and the United States last week actually significantly exceeded the $253.5 billion signed at ceremonies during US President Donald Trump's state visit to China, according to a senior commerce official on Monday.

President Xi Jinping and Trump witnessed the signing of commercial documents with a total value of $253.5 billion on Thursday.

China's Vice-Minister of Commerce Yu Jianhua said aside from those documents, there were many deals in which agreements were reached separately involving complex, big-ticket contracts such as chemical and energy import deals that have taken months or years of negotiations to complete.