Trade is actually beneficial for both. China is the fastest growing importer of American-made goods. The US export to China has been growing 468 percent over the last decade. China already is the world’s largest auto market. American big three autos sell more cars in mainland China than in the US. Apple, Boeing, agricultural producers and many many others, their largest market is not in the US but in China. The US exports more than 160 billion dollars of goods to China each year. In addition, the US profits 150 billion dollars annually from Chinese service sector( not take into account in trade figures). The trade war can contribute 10 million job losses in the US. The factories, department stores and other sectors will also have to slow or shut down or mass layoff due to a lack of parts and components. China can also dump the US bounds in the open international market. The US can slip into recession for decades to come.

http://www.worldsrichestcountries.com/top_china_imports.html