Beijing's Miyun County shut down Shuanglong Cement Corporation yesterday. It aims to protect the water resource in Miyun Reservoir. Up to now, all pollution enterprises in Miyun Reservoir are closed. As a result, no industrial powder dust will be produced in Miyun County.

Shuanglong Cement Corporation contributed over 99% of the industrial powder dust emission in Miyun County. After shut down it, the industrial powder dust emission is reduced by 2900 tons, SO2 emission is reduced by 260 tons, and soot emission is reduced by 32 tons.