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The Polypropylene Copolymer market in the USA remained volatile yet broadly firm during late April and early May 2026, continuing within a sustained 12-week bullish trend. In late April, prices eased temporarily as higher operating rates increased domestic Polypropylene Copolymer availability, leading to inventory build-up across distribution hubs, while weaker propylene costs reduced production pressure and encouraged limited price corrections. Demand conditions were stable but slightly moderated due to substitution toward recycled materials, which softened near-term procurement intensity. However, the trend reversed sharply in early May as tightening propylene supply and a rapid increase in feedstock costs significantly raised Polypropylene Copolymer production expenses, restoring strong cost-push momentum. At the same time, reduced import inflows from the Middle East further constrained Polypropylene Copolymer availability, allowing sellers to regain pricing power and lift spot offers. Despite intermittent demand fluctuations, the market structure remained tight due to high domestic reliance and limited external supply support. Overall, the Polypropylene Copolymer market stayed firmly supported by feedstock volatility and constrained supply conditions, maintaining an upward bias with short-term fluctuations.