After the Spring Festival, the prices of clinker in the Yangtze River Delta and the Pearl River Delta rose one after another, and many enterprises have issued price adjustment letters. On February 7, the price of clinker along the river in Anhui increased by 30 yuan / ton; On February 11, eastern Guangdong raised the clinker price by 30 yuan / ton, and several cement enterprises in Yunnan notified to raise the price of various types of cement by 50 yuan / ton. Subsequently, some cement enterprises in Chongqing and Hunan also successively issued price adjustment letters, and the scope of price increase continued to expand. An enterprise in Chongqing said that due to the recent rise in raw material prices due to changes in market conditions, it decided to increase the price of various types of cement by 50 yuan / ton on February 14.