BEIJING, April 1 (Reuters) - China has criticised the

tightening of U.S. rules on semiconductor exports, saying they

have created more hurdles to trade and more uncertainty in the

chip industry.

The Biden administration last week revised rules aimed at

making it harder for China to access U.S. artificial

intelligence chips and chipmaking tools, part of a larger effort

to hobble Beijing's chipmaking industry over national security

concerns.

"The U.S. has broadened the concept of national security,

arbitrarily revised the rules, and tightened control measures.

That has not only set up more obstacles and imposed a heavier

compliance burden on Chinese and American companies who want to

work together economically and in trade normally but has also

created huge uncertainty for the global semiconductor industry,"

a Commerce Ministry spokesperson said, according to a statement.

The spokesperson, responding to a reporter's question, said

the move by the U.S. "seriously affects mutually beneficial

cooperation between Chinese and foreign enterprises and harms

their legitimate rights and interests. China firmly opposes

this."

The U.S. imposed rules last October barring exports and

companies like Nvidia ( NVDA ) and AMD have been

affected by the spat.

"China is ready to work with all parties to strengthen

mutually beneficial cooperation and promote the security and

stability of the global semiconductor industry and supply

chain," the spokesperson said.