Yes and No. Various environmental protection laws are in                      force, such as the Water Pollution Prevention and Control                      Law, the Air Pollution Prevention and Control Law, the Solid                      Waste Pollution Prevention and Control Law, and the Noise                      Pollution Law. Just like with piracy, in practice, enforcement                      is weak. However, foreign investors should not take this as                      an excuse to ignore the laws, as they are under stricter scrutiny                      than domestic companies. 
While environmental regulations are not strictly enforced                      at this time, they might be in the future. If they were to                      be enforced, this would not only lead to the closing of polluting                      factories, but may also raise criminal and civil liability                      for acts of the past. Many foreign investors voluntarily set                      stricter standards than those required by Chinese law. One                      reason is the potential for future legal liability. Another                      is to maintain a good public image in their home countries.                      Companies cannot afford the image that they relocate production                      to China in order to escape stricter laws in their respective                      home countries.