During the winter storage period, the price of petroleum asphalt rose strongly with the demand of winter storage, but behind the winter storage was the continuous decrease of demand in the middle and lower reaches of the year, and the price of petroleum asphalt fell after entering the construction peak season.

1, the price depends on supply and demand, and the factors that affect supply and demand are also factors that affect the price. Petroleum asphalt is mainly used in road construction and construction, and the demand for coking and oil blending has increased rapidly in recent two years. The demand for these three pieces has a direct impact on the price. The domestic output and import of supply-side asphalt also directly affect the price.

2. Crude oil price. Petroleum asphalt comes from crude oil, and the price level of crude oil determines the cost level of asphalt.

3. The demand of asphalt terminal shows obvious seasonality. Road construction is closely related to weather conditions. The temperature in winter is low, so it is not suitable for paving asphalt, and the terminal demand is stagnant. However, due to the large commercial inventory, the commercial inventory is close to 9 million tons in recent years, and the demand for winter storage has a significant impact on the price. Judging from the seasonality of prices in recent years, 1 is easy to rise, easy to fall in the second quarter and weak in the fourth quarter.