Most of it was probably used as a foam blowing agent. "Blowing It: Illegal Production and Use of Banned CFC-11 in China's Foam Blowing Industry" https://eia-g

Most of it was probably used as a foam blowing agent. "Blowing It: Illegal Production and Use of Banned CFC-11 in China's Foam Blowing Industry" https://eia-global.org/reports/20180709-blowing-it-illegal-production-and-use-of-banned-cfc-11-in-chinas-foam-blowing-industry https://eia-global.org/reports/20180709-blowing-it-illegal-p...