Continued Emissions of the Ozone‐Depleting Substance CCl_4 from Eastern Asia
agupubs.onlinelibrary.wiley.com
agupubs.onlinelibrary.wiley.com
https://eia-global.org/reports/20180709-blowing-it-illegal-p...
Apparently carbon tetrachloride is used as a chemical precursor to CFC-11:
https://en.wikipedia.org/wiki/Carbon_tetrachloride#Historic_...
But I would expect that there would be limited releases of CCl4 itself if the main use were in manufacturing other chemicals. Maybe they're just manufacturing the whole gamut of chemicals banned by the Montreal Protocol and using them in exactly the same ways they were used historically.