"companies will knock off their products." 中文意思

问题描述:

"companies will knock off their products." 中文意思
"most (people in the survey)said the worst thing about doing business with China isn't the risk of poorly made or dangerous goods.It's the fear that Chinese companies will knock off their products"
This is from an article published in latest .
1."Chinese companies will knock off THEIR products" 中文意思?
THEIR in this sentence refers to who (Chinese company or Foreign company)?

In this sentence KNOCK OFF means copy,or imitate.
And their products refers to foreign companies' products.