The Chinese building materials industry is again under scrutiny. A few years ago, the U.S. Consumer Product Safety Commission was fielding complaints from homeowners about health conditions that developed when they moved into newly constructed or renovated homes. Homeowners also found corrosion of copper wire and other metal components in their homes. All told, the CPSC received more than 4,000 reports from people in 44 states (37 reports from California), the District of Columbia and U.S. territories.
The culprit proved to be sulfurous gases emitted by drywall imported from China. A number of class action lawsuits followed.