In recent years, the state has vigorously promoted the work of environmental protection supervision. It has become a hot word in the industry to fight against pollution and win the battle of defending the blue sky. Cement industry, as a high energy consumption and pollution industry, has been paid close attention by the state and people. Environmental protection is becoming the key to the survival of cement enterprises.

Since last year, Jiangsu, Shandong, Sichuan, Henan and other places have issued ultra-low emission standards. On March 19 this year, there was more news on the "2009 Tangshan Key Industries Deep Control Technology Achievements Conversion Docking Meeting" that Tangshan cement enterprises need to control dust, sulfur dioxide and nitrogen oxides to no more than 100mg/m3, 30mg/m3 and 50mg/m3 respectively by the end of September. It is undoubtedly a severe challenge for cement enterprises to continuously reduce the three major pollutant emission indicators in the cement industry.