Group 1 - The core viewpoint of the news indicates a decline in the main crude oil futures, with a drop of nearly 2% in the market, while asphalt futures showed a slight increase [1] - As of April 29, the main crude oil futures price was reported at 485.50 yuan per barrel, down 1.76% from the previous day [1] - The fuel oil futures decreased by 1.33%, settling at 2967.00 yuan per ton, while low-sulfur fuel oil futures fell by 0.66% to 3463.00 yuan per ton [1] Group 2 - The opening prices for various contracts on April 29 were as follows: SC crude oil at 495.70 yuan, fuel oil at 3015.00 yuan, and asphalt at 3449.00 yuan [2] - The previous closing prices for these contracts were 498.00 yuan for SC crude oil, 3026.00 yuan for fuel oil, and 3451.00 yuan for asphalt [2] - The liquid petroleum gas contract opened at 4407.00 yuan, with a previous closing price of 4409.00 yuan [2] Group 3 - As of April 28, the commodity warehouse receipts showed that the medium-sulfur crude oil futures remained stable at 4,644,000 barrels, while fuel oil futures also held steady at 46,170 tons [3] - The warehouse receipts for low-sulfur fuel oil increased by 31,000 tons, reaching a total of 42,250 tons [3] - The data indicated a phenomenon of "backwardation" in the market, where the spot prices exceeded the futures prices for fuel oil, asphalt, liquefied petroleum gas, and low-sulfur fuel oil [3]