1/2 of China was shut down, like the US. They were not making a lot. Hubei was locked down...but it was serious everywhere else.
From 7 Feb - workers start traveling back to cities for work
Feb 10 - return to work. Beijing quarantine requires work at home or limited entry to offices. Nearly all food processors are back at work.
“Cong said roughly three quarters of the country’s facial mask makers and protective clothing manufacturers have resumed work.” “Nearly all food manufacturers and processors are also back in business.”
https://www.cnn.com/2020/02/11/economy/china-coronavirus-returning-to-work-economy/index.html