Let's not forget it's the western investors who are interested in Chinese market not the other way around. Maybe you shoudl ask yourself whether a European country would sacrifice trades with the new superpower just to appease Israel? Why doesn't US cut trades with China? afterall Chinese have been selling to Iranians and North Koreans for the passed 3, 4 decades.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: 'U.S. believes Chinese companies are helping Iran develop nukes'