厂区建于2003年，于2014年关闭，该厂的主要污染因子为氰化物，由项目淬火工序使用氰化钠、机油对缝纫机零部件造成。我公司承担该场地的环境调查于评估工作。

The company  was built in 2003 and closed in 2014. The main pollution of the company is Cyanide, which is caused by the use of sodium Cyanide and oil in the quenching process.We are serving the investigation and environmental evaluation of the site.