Polymer Supply Corridors to SE Asia: 3 of 4 Routes Disrupted in 2026

Chinese polymer FOB correction in five trading days. Hormuz panic pushed Chinese PP and LLDPE prices up sharply last week. That premium is now unwinding — FOB prices have given back over $50/MT as CTO/PDH producers continue quoting normally into flat domestic demand. The correction creates a better entry point than last week, but three of four supply corridors to SE Asia remain disrupted.

Three of four polymer supply corridors to SE Asia are now disrupted simultaneously:

✕ Middle East — Hormuz selective blockade persists. Ceasefire reports circulated March 25; Iran has denied all negotiations. Unverified.

✕ Korea — YNCC's 1.2 MMtpa ethylene cracker entered maintenance ~March 24. LG Chem Daesan PE turnaround confirmed. Korean PE/PP export availability sharply reduced for new orders.

✕ Europe — Petrochemical worker strikes reported at BASF and INEOS facilities.

▲ China — CTO and PDH producers quoting normally. China polymer exports to SE Asia grew sharply in Jan-Feb YoY, per GACC customs data. The last corridor operating at scale — but not without its own pressure points (see below).

Chinese PP and LLDPE FOB prices softened over $50/MT in five days as last week's Hormuz panic premium unwinds — CTO/PDH producers kept quoting normally and domestic demand stayed flat. For SE Asian buyers, this creates a window: supply is available, prices are declining, and alternatives are either offline or carrying war-risk premiums.

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LLDPE C4 Film — HOLD. LLDPE 7042 FOB dropped from ~$1,210 to $1,160 in five days — but most of that move is a correction from last week's Hormuz panic spike, not a fundamental shift. DCE LLDPE futures firmed slightly on March 25 even as physical prices fell — a divergence that may indicate the selloff is approaching exhaustion, though one day of futures data is not confirmation. Why not BUY: the panic premium may not be fully unwound yet — domestic demand remains flat and producers are still competing on export pricing. Current levels are fair but not yet compelling. Buyers with near-term needs are not overpaying; buyers who can wait a few days may get a slightly better entry.

PP Yarn — HOLD. Four independent producers (Zhejiang Petrochemical, Jineng, ExxonMobil, Donghua) all converged at $1,160 FOB this week — down from $1,190–1,210 last week. When multiple producers with different cost structures land on the same price simultaneously, it can indicate a cost floor — though it can also mean producers are matching the lowest-cost competitor. Why not BUY: the convergence just happened. It needs 2–3 days to confirm whether this is a real floor — if one producer breaks below $1,160, the floor isn't real. Watch for the next QQT sheet before committing.

PP Thin Wall — HOLD. High-MFR thin wall grades (MFR 70) held at $1,230 FOB while PP yarn dropped $50. The divergence makes sense — thin wall serves packaging applications where downstream demand is steady, while yarn is more exposed to construction and industrial cycles. At $1,230, thin wall pricing hasn't participated in the panic or the correction. No urgency in either direction.

PVC SG-5 — BUY before April 1. China eliminates the 13% VAT export rebate on PVC effective April 1. This is a policy fact, not a market view. Current FOB pricing ($933/MT) still reflects the rebate. Post-deadline, producers will need to pass through the lost rebate, creating an expected $20–40/MT price step-up. For a 22 MT container, that is $440–880 in rebate savings available now but not after March 31. Buyers with Q2 PVC needs should act this week.

Korea Capacity Offline

YNCC's 1.2 MMtpa Yeosu cracker joins LG Chem Daesan and earlier Lotte/Hanwha maintenance in taking Korean PE/PP export capacity offline through mid-May. Korea is historically the #2 polymer origin for Vietnam by value (~26% of imports). Buyers dependent on Korean grades face extended lead times or origin-switching decisions.

China: Last Corridor, With Caveats

Chinese CTO and PDH producers are quoting normally and prices have softened, giving SE Asian buyers a favorable entry point. But three limits on Chinese insulation are worth noting:

• Sinopec has cut refinery runs ~10%. While multiple factors contribute — including weak domestic fuel demand — the timing suggests Hormuz pressure may be reaching China's downstream sector, even as CTO/PDH routes remain structurally decoupled from crude.

• China's fuel export ban (diesel, gasoline, aviation fuel) has not been extended to petrochemicals — but the policy machinery exists. If domestic supply tightens, export restrictions on polymers are within Beijing's toolkit.

• Chinese-flagged vessels transit Hormuz on a case-by-case basis under Iran's selective regime. This is a permission, not a guarantee.

China has more runway than any other origin — months of feedstock reserves, diversified supply routes, and a functioning logistics corridor. But runway is not immunity. Buyers should secure supply while the window is wide, without assuming it stays open indefinitely.

Two emergency surcharges took effect this week: CMA CGM Emergency Fuel Surcharge ($75/TEU eff. March 23) and Maersk Emergency Bunker Surcharge (eff. March 25, amount pending). Estimated impact: +$5–9/MT on China-to-Vietnam routes.

Three things to watch this week:

1. Hormuz — Trump's postponement of military action expires ~March 28. Either negotiations produce a framework or escalation resumes. Physical supply disruption persists regardless of oil futures volatility.

2. LLDPE floor — DCE futures and physical prices are diverging. If futures hold, expect physical prices to stabilize in the near term.

3. PVC deadline — 5 days to book at pre-rebate pricing. After April 1, the step-up is mechanical.

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