On June 6, 2026, international crude oil futures prices fell sharply. The WTI crude oil futures for July delivery on the New York Mercantile Exchange dropped $2.50 to close at $90.54 per barrel, a decline of 2.69%. The Brent crude oil futures for August delivery in London fell $1.94 to close at $93.09 per barrel, a decline of 2.04%.
Affected by the decline in international crude oil, domestic refined oil prices saw the second reduction this year. Gasoline No. 92 decreased by 0.41 yuan per liter, No. 95 by 0.44 yuan, and No. 0 diesel by 0.43 yuan. The next price adjustment window is at midnight on June 18, with a high probability of further reductions.
On the plastic raw material side, upstream monomer prices weakened across the board. Ethylene CFR Northeast Asia was quoted at $898/ton, down $89; Ethylene CFR Southeast Asia was quoted at $948/ton, down significantly by $159. Propylene CFR China was quoted at $1,118/ton, down $9. Butadiene CFR Taiwan was quoted at $1,515/ton, down $80. Styrene Asia was quoted at $1,178/ton, up slightly by $1.
For plastic industry price indices, the composite index stood at 8,540 points, down 39 points. The PE price index was 9,253 points, down 49; PVC price index 4,808 points, down 25; ABS price index 10,143 points, down 52; PS price index 10,689 points, down 116. Only the PP price index fell slightly by 3 points to 9,692 points, showing relative resilience.
Market Outlook: International crude oil prices continue to decline, coupled with the downstream demand entering the off-season, cost support for plastic raw materials has weakened significantly. In the short term, PE, PVC and other varieties may continue to run weakly. Attention should be paid to the domestic refined oil price adjustment window on June 18 and OPEC+ subsequent production policies.
