On May 6 – Wanhua Chemical recently announced that the 750,000-ton/year PDH unit at its Yantai Industrial Park, which had been shut down for maintenance since March 22, has completed the overhaul and resumed production. In addition, the company's 900,000-ton/year PDH unit and 600,000-ton/year POCHP unit at the Penglai Industrial Park were shut down for maintenance starting April 26, with an expected maintenance period of approximately 30 days. Chempricehub assessment of liquefied petroleum gas (LPG): Bearish/Bullish Score: -0.5.

• The restart of Wanhua Chemical's 750,000-ton/year PDH unit boosts LPG demand, while the 900,000-ton/year PDH unit shutdown for 30 days reduces demand. In the short term, net demand is slightly lower, forming a minor bearish factor for LPG prices.
• The main LPG futures contract (2607) closed at 5,994 yuan/ton on April 30, 2026, up 86 yuan/ton from the previous trading day. Short-term prices may face pressure and weaken slightly.

Propylene: Bearish/Bullish Score: 0.5

• The restart of the 750,000-ton/year PDH unit increases propylene supply, while the shutdown of the 900,000-ton/year PDH unit for 30 days reduces supply. In the short term, net supply is slightly reduced, forming a minor bullish factor for propylene prices.

Propylene oxide (PO): Bearish/Bullish Score: 1

• The 600,000-ton/year POCHP unit at Wanhua Chemical is shut down for 30 days, significantly reducing propylene oxide supply, forming a generally bullish factor for PO prices.

Styrene Monomer (SM): Bearish/Bullish Score: 0.5

• The POCHP unit co-produces styrene monomer; the 600,000-ton/year unit shutdown for 30 days slightly reduces styrene supply, forming a minor bullish factor for styrene prices.
• The main styrene futures contract (2606) closed at 10,018 yuan/ton on April 30, 2026, up 36 yuan/ton from the previous trading day. Short-term prices may have room for a slight uptick.