The price of international crude oil in April was supported by tighter supply and the end of the high-level consolidation period of Europe and America crude oil futures tended to go down, which provided some positive support to the cost end of the chemical market. As a result, the price of some chemical products showed a strong upward trend during the month, however, many of them are accompanied by the supply-side tightening, and at present, the profit improvement of the downstream consumer industry is limited.