What is Owens Corning's product? Why is it so toxic?

Owens Corning production is a fiberglass composite materials, in the production process will use a variety of organic substances and curing agents, so the pollution is more serious, the Shanghai branch has been exposed, 08 years due to environmental protection does not meet the standards were punished, in September this year, this branch is still due to the formaldehyde in the exhaust gas exceeded the standard by the local residents of the door of the online exposure, the People's Daily Online, Sina.com have sent a reporter on-site unannounced visits