https://www.nytimes.com/2020/03/27/business/china-coronaviru...
"Spanish medical experts, who have examined the 9,000 kits delivered last week, said they have only a 30 percent probability of detecting the virus."
https://www.voanews.com/science-health/coronavirus-outbreak/...
"The news comes following complaints from Spain that about 70 percent of the kits it purchased were too inaccurate to be used to diagnose patients who were sick and stuck in emergency rooms."
https://www.foxnews.com/world/china-launches-investigation-i...
"Up to 80 percent of the 150,000 portable, quick coronavirus test kits China delivered to the Czech Republic earlier this month were faulty, according to local Czech news site Expats.cz."
https://news.yahoo.com/china-supplied-faulty-coronavirus-tes...