昆明2000民众上街游行 大批警察出动

Paraxylene (PX) is a chemical essential to the process of manufacturing plastic bottles and polyester clothing which is dangerous if inhaled or if absorbed through skin, causing different degrees of damage to abdominal organs and the nervous system. China is the world’s largest PX producer and consumer as of 2010. Safety concerns over PX factories have prompted environmental protests in China.

PX（对二甲苯）是一种无色透明液体，具有芳香气味，易燃，有毒，是一种危险化学品，可使胎儿发生畸形，对人和环境影响大。