Pure benzene hit the daily trading limit downward, while styrene fell over 5%—when crude oil tumbled, why did the 'two benzenes' suffer the steepest declines?

What does low inventory mean? It means the market’s cushion is extremely thin. In a rising market, low inventory amplifies gains. Because spot supplies are tight, holders are reluctant to sell, forcing buyers to chase higher prices. In early September, the basis for pure benzene surged to RMB 678/ton, and that for styrene reached RMB 297/ton—both at relatively high levels. Elevated basis is itself a direct reflection of low inventory, but it also embeds a substantial geopolitical premium. In a falling market, the logic reverses: although spot supply remains tight, the market begins pricing in the expectation of future supply recovery. Once price sentiment shifts, low inventory turns into a ‘lack of buyers’ dilemma—long positions seek to liquidate, but liquidity is insufficient; short positions seek to add, yet there are no counterparties. Pure benzene hitting the daily trading limit downward was an extreme manifestation of this liquidity crunch. Table 2: Core Inventory Data for Pure Benzene and Styrene Source: Longzhong Information, SteelHome Another impact of low inventory is that it constrains the depth of decline. With port inventories standing at only 38,000 tons for pure benzene and 34,300 tons for styrene in East China, such low stock levels do not support sustained sharp price drops. Once prices fall to levels where downstream players are willing to replenish stocks, spot buying will re-emerge. Downstream is experiencing ‘negative feedback’—high raw material costs cannot be passed on. Low inventory and rising prices—but downstream players are losing money. This is the core contradiction across the aromatic hydrocarbon industry chain today. Major downstream products of pure benzene include caprolactam, phenol, aniline, and adipic acid. As of September 16, their production profit margins stood as follows: caprolactam at –RMB 1,300/ton, phenol–acetone at –RMB 394/ton, aniline at +RMB 3,074/ton, and adipic acid at –RMB 2,312/ton. Three out of four major downstream products are operating at a loss: caprolactam loses RMB 1,300 per ton; adipic acid loses RMB 2,312 per ton. Styrene’s downstream sector is also under pressure. Non-integrated styrene production margin stands at –RMB 589/ton—slightly improved week-on-week, yet still deeply negative. The ‘three hard plastics’—EPS, PS, and ABS—are similarly squeezed: PS production margin is –RMB 80/ton; ABS is –RMB 1,452/ton. The profit distribution across the value chain is clear: upstream pure benzene captures most of the profits; midstream styrene operates slightly at a loss; downstream ‘three S’ products face even deeper losses. When pure benzene prices were pushed above RMB 9,800/ton by geopolitical factors, downstream players reached their tolerance limit. High raw material costs failed to transmit downward, triggering negative feedback via downstream plant cuts or load reductions. This negative feedback exerts dual downward pressure on both pure benzene and styrene prices. First, reduced downstream output directly curbs procurement demand for pure benzene; second, downstream product prices fail to rise, thereby capping styrene’s upside potential. Spot market data for pure benzene on September 14 showed that high raw material costs combined with weak demand expectations resulted in a lackluster peak season. Geopolitical conflict raised costs—but downstream players refused to pay up. That is the intrinsic logic behind this round’s reversal from rally to correction. Where is the supply-demand balance heading? Setting aside short-term sentiment, medium- to long-term price direction hinges on fundamental supply-demand dynamics. First, let’s examine pure benzene’s supply side. As of September 11, weekly petroleum-derived benzene output stood at 424,700 tons, up 5,700 tons week-on-week; operating rate was 70.58%, up 0.95 percentage points week-on-week.

Urgent alert! A new round of sharp price hikes in plastics and chemical products is imminent! Houthi forces have blocked the Red Sea; price-increase notices for April are already en route!

Supply shock: The Red Sea–Suez Canal route is the primary shipping corridor for Middle Eastern PE exports to Europe and Asia. Following the Houthi blockade of the Bab-el-Mandeb Strait, Middle Eastern PE exports face a ‘can’t get out’ predicament. Trade sources report that several Saudi PE producers have suspended quotations for April-loading cargoes, awaiting clarity on the situation. According to Longzhong Information, as of March 28, PE port inventories in East China had declined 12% month-on-month, and forecasted arrivals have fallen for three consecutive weeks. Structural differences: LLDPE (Linear Low-Density Polyethylene, mainly used for films): Supported by agricultural film demand, it exhibits the highest price elasticity, with expected gains of 12%–18%. LDPE (Low-Density Polyethylene produced under high pressure, mainly used for heavy-duty packaging films and cable insulation): Supply is relatively tight, likely leading the涨幅, with projected increases of 15%–20%. HDPE (High-Density Polyethylene, mainly used for pipes and hollow containers): Driven by infrastructure demand, its gains will be comparatively moderate, at 8%–12%. Price outlook: LLDPE front-month futures are projected to target RMB 9,500–9,800/ton in April; LDPE may break above RMB 11,000/ton. Packaging-film and agricultural-film manufacturers are advised to secure at least one month’s worth of raw material inventory by early April. Polyvinyl Chloride (PVC): Coal-chemical advantages become prominent; its trend is relatively independent. PVC is among the plastic varieties least affected by crude oil, as roughly 80% of China’s PVC capacity employs the calcium carbide route (coal-chemical), rather than oil-based routes. Amid this Middle East crisis, PVC may emerge as a ‘safe-haven’ product. Cost side: Although rising crude oil prices exert some upward pressure on ethylene-based PVC (accounting for ~20% of capacity), stable coal prices highlight the cost advantage of calcium-carbide-based PVC. Currently, the all-in production cost for calcium-carbide PVC in Northwest China stands at RMB 5,600–5,800/ton—far below the ethylene-route cost floor of over RMB 7,000/ton. Supply-demand side: Domestic PVC social inventories remain at historically high levels (~550,000 tons), indicating ample supply. On the demand side, slowing real estate completions suppress demand for pipes and profiles, yet export demand (especially to India and Southeast Asia) remains robust. PVC export order volume rose 25% month-on-month in March, driven by a surge in pre-anti-dumping-ruling shipments to India. Price outlook: PVC prices are expected to trade in a range-bound pattern—‘supported from below by costs, capped from above by demand’—with a projected 5%–8% increase over late-March levels during April–May. Compared with PP and PE, PVC’s rally will be more moderate, yet offers relatively strong downside protection. Pipe and profile manufacturers are advised to purchase raw materials in batches on dips. ABS, PC, etc.: Passive follow-up amid dual pressure. Engineering plastics such as ABS (acrylonitrile–butadiene–styrene copolymer) and PC (polycarbonate) face dual pressure from ‘rising raw material costs’ and ‘weak end-market demand’. Raw material side: All three key ABS feedstocks—styrene (SM), butadiene (BD), and acrylonitrile (AN)—are impacted by rising crude oil prices. Among them, styrene shows the strongest correlation with crude oil, having already risen over 12% in March. Similarly, BPA (bisphenol-A), the main PC feedstock, faces cost-driven upward pressure. Demand side: End-user sectors—including home appliances, automobiles, and electronics—have seen slower-than-expected recovery, limiting acceptance of high-priced engineering plastics.

Feedstock Costs Pressure Global Styrene Margins

Oct 21, 2026

Elevated benzene costs and lackluster demand are squeezing global styrene margins, with production economics expected to remain challenged amid sustained high oil prices.

chemweek

Feedstock Costs Pressure Global Styrene Margins

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