Just from contrast analysis opinions of city's appearances environmental sanitation supplies in Xi'an, Zhengzhou and the Dalian, finding the reason of affecting the Xi'an urban environment supplies, carries on the ponder to the Xi'an urban environment sanitation system and city public product supplies system and the supplies efficiency, at last to be good to the foundation of country health city for Xi'an as well as the improvement of city public product supplies to Xi'an... |