China is running out of American goods to target for sanctions, as new tariffs on liquified natural gas demonstrate that China is turning to American products that play a significant role in the Chinese economy. China has already targeted 80% of U.S.-imported goods, while the U.S. has only targeted just under half, representing a far greater ability to increase pressure on China. 

Source: China depletes its ammunition belt with latest tariff threat – Nikkei Asian Review