Oil Plunge: US-Iran Deal Triggers Geopolitical Premium Unwind
On June 15, 2026, the United States and Iran signed an electronic memorandum of understanding to end their long-standing military confrontation. The agreement is expected to take effect on June 19, reopening the Strait of Hormuz to unrestricted navigation.
International crude markets reacted violently. WTI crude plunged 5.27% to $80.40 per barrel, breaking below the $82 mark. Brent crude dropped 4.64% to $83.28 per barrel. Both benchmarks recorded their largest single-day declines in months.
US President Trump stated that Iran would be allowed limited low-level uranium enrichment, emphasizing that the new agreement ensures Iran's enrichment will only serve non-military purposes. The full text of the agreement is expected to be released after Friday.
Plastics Feedstocks Under Broad Pressure
The oil price collapse has directly impacted downstream plastics feedstocks, with all major grades declining:
- Polyethylene (PE)：Demand weakened in May with the downtrend expected to continue into June. Domestic production increased while imports contracted, leaving supply stable to slightly higher. Downstream buyers remain cautious in the traditional off-season.
- Polypropylene (PP)：Futures fell 4.37% to 8,259 CNY/ton on June 15. Spot prices followed suit, with recycled PP white transparent pellets at approximately 5,800 CNY/ton.
- PVC：Spot prices have declined from 5,772 CNY/ton in March to 4,555 CNY/ton on June 15, a cumulative drop exceeding 21%.
- PET：Cost support collapsed with spot prices plummeting 320 CNY/ton in a single day. Increased supply expectations and limited demand point to continued weakness.
- ABS：Mid-to-high-end domestic ABS quoted at 10,400 CNY/ton, low-end at 9,550 CNY/ton, relatively resilient but under pressure.
- Biodegradable Materials：PLA at 18,050 CNY/ton (-0.45%), PBAT at 10,080 CNY/ton (-0.40%), BDO at 7,550 CNY/ton (-2.58%).
China Fuel Price Cut Expected
China's refined product pricing cycle entered its 7th working day with crude change rate at -4.54%. Gasoline and diesel are expected to drop by 320 CNY/ton, translating to approximately 0.25 CNY/liter for 92-octane and 0.27 CNY/liter for 95-octane.
Industry Developments
Zhongyan PEEK Expansion：Zhongyan Inc. (688716) plans to invest approximately 1.2 billion CNY in Jiangsu to build a 10,000-tonne/year PEEK material and 2,000-tonne/year PEEK precursor integrated facility. The stock surged 7.37% to 34.84 CNY on June 15.
Hongsheng New Materials IPO：Nylon new materials company Hongsheng New Materials recently went public, adding to the list of listed low-carbon advanced materials firms.
Plastics Recycling Summit：The 2026 Plastics Recycling and Utilization High-Quality Development Seminar is being held today, June 16, in Ningbo, focusing on circular economy and recycling technology innovation.
Market Outlook
In the near term, the geopolitical premium unwind from the US-Iran deal will keep crude and plastics feedstock prices under pressure. However, any hiccups in implementation could trigger a rebound. For plastics processors, lower raw material costs support margin recovery, but weak seasonal demand will continue to limit overall market performance.
