On November 27, 2007, an explosion occurred in one of the chemical factories in Chenjiagang Chemical Zone (), with 7 killed and around 50 injured. On November 23, 2010, more than thirty were poisoned by a harmful gas release. In the of harmful chemical release and potential upcoming explosions in the Chenjiagang Chemical Industry Park led over ten thousand residents to move away in panic from the towns of Chenjiagang and Shuanggang () during which four people died and many were injured. On the afternoon of May 18 and again on July 26 in 2011, there were explosions at local factories.