Yesterday, the Municipal Construction Committee announced the first batch of 22 green production standard concrete mixing stations in the city. The pollute is small in these mixing stations, and the operators do not even wear masks.

The city's relevant officials said that by the end of 2012, the city's mixing site will be reduced from 202 in 2008 to 135, the reduction of 33.2%, and all the mixing stations must reach the green production standard.

Zhu Genli, director of building energy efficiency and building materials department of Municipal Construction Commission, said that the previous concrete mixing stations were mostly open-air operations, and raw materials such as sand and cement were placed in the open air. Once the wind and dust were blowing, the surrounding environment would be greatly affected. The sand and cement silos of the green concrete mixing station are completely closed, with walls on all sides, covered on the top, and dust removal equipment is installed at the same time. In addition, the green mixing station can realize the ratio of the computer.