In the purpose of maintaining the price of processed oil and social stability in Ningbo, Ningbo Reform and Development Committee worked with such departments as quality supervision, trade and public security to have close examination of processed oil market in Ningbo. They reported that most enterprises could implement state policy while some had increased oil price. Price Control Bureau of Ningbo said that they expected more complaints concerning oil price on 12358. they added that supervision of oil market will be strengthened and any practice of price increase would be severely banned.