The window for domestic oil price adjustment opens on 16 May or welcomes the "biggest decline" of the year. At 24:00 today, a new round of domestic oil price adjustment window will open. Following the last round of refined oil prices fell, the agency expects this round of refined oil prices may continue to fall, is expected to usher in the year's "biggest decline." According to agency estimates, as of May 15, the average price of reference crude oil was US $74.19 per barrel, with a rate of change of-7.16%. Domestic gasoline and diesel are expected to be reduced by about 360 yuan per ton, equivalent to about 0.3 yuan per liter of gasoline and diesel. This means that 95 # gasoline in most parts of the country is expected to return to the "7-yuan era."