Plastic+production

http://www.momscleanairforce.org/whats-plastic-got-to-do-with-clean-air/

http://earthjustice.org/news/press/2003/air-pollution-from-pvc-plastics-plants-challenged

http://www.brighthub.com/environment/green-living/articles/62042.aspx

http://www.plasticsnews.com/article/20150717/NEWS/150719926/china-imposing-voc-tax-on-plastics-and-rubber-production