Two-thirds of US companies in China said they have been hurt by the spiraling tariff war, according to a survey conducted between Aug 29 and Sept 5, Associated Press reported.

Some 63.6 percent of more than 430 companies that responded to the survey said profits and customer demand have fallen due to the US tariffs and 62.5 percent said the same about retaliatory Chinese tariffs. Some 74 percent said they would be affected if Washington's tariff increase of $200 billion of Chinese goods goes ahead. 

"The US administration runs the risk of a downward spiral of attack and counterattack, benefiting no one," said William Zarit, chairman of the American Chamber of Commerce in China, in the statement, according to a report by Xinhua .