Of course I had to Google to find out what other things we export.
America's exports to China amounted to
$116.2 billion or 7.7% of its overall exports.
1. Aircraft, spacecraft: $15.4 billion
2. Electronic equipment: $12.8 billion
3. Machinery: $12.3 billion
4. Oil seed: $11.1 billion
5. Vehicles: $10.9 billion
6. Medical, technical equipment: $7.9 billion
7. Plastics: $4.9 billion
8. Woodpulp: $3.4 billion
9. Organic chemicals: $2.5 billion
10. Cereals: $2.4 billion
Top US Exports
On another site it listed Washington as the number one state exporting to China in 2014.
US State Exports to China (2005-2014) | US China Business Council
That's a lot of ProVaris.