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SunSirs: China PS Maeker Is Weak and Volatile at the End of December 2025
December 24 2025 09:30:29SunSirs(Selena)

At the end of December, the domestic PS market was mainly weak and consolidated. Most spot prices of certain brands have limited fluctuations. According to the bulk ranking data of SunSirs, as of December 23, the benchmark price of SunSirs PS was 7,450 RMB/ton, with a month on month increase or decrease of -1.32%.

Supply level: Recently, the operating rate of the domestic polystyrene industry has slightly rebounded. Some units of enterprises such as Guangxi Petrochemical and Lianyungang Petrochemical are gradually returning, and the overall industry load has been narrowly increased to 60%. The supply of genuine materials is abundant, with only a few models experiencing tight supply. The current inventory position is relatively controllable, and there are still expectations of relaxed market supply. Overall, the supply side's support for PS is average.

Cost factor: Recently, the styrene market has fallen more than it has risen. The raw material pure benzene was concentrated at the port in the first half of the month. Current port inventory accumulation. And crude oil support weakened, while double bearish dragged pure benzene to maintain weak operation. The styrene seller camp tends to operate in a decentralized manner. Downstream 3S production has been reduced, suppressing demand. It is expected that the styrene market will fluctuate weakly in the short term.

In terms of demand, the profitability of terminal enterprises continues to be sluggish, and the downstream electrical shell industry of PS has not seen any improvement in production scheduling, with a generally low year-on-year trend. In addition, there is no expected increase in terminal load in the future. The downstream demand for PS is high and difficult to meet, with a small number of buyers following up. The overall stocking logic maintains the need for replenishment, and the flow rate of goods supply slows down. Merchants' inventory positions are deadlocked, the market maintains a cautious atmosphere, and trading momentum is average. Overall, the demand side provides average support for the PS market.

At the end of December, the domestic PS market fluctuated weakly. The production load of the aggregation plant is stable with small increases, and the balance of consumer demand is mainly broad. Business analysts believe that the upstream styrene target range has turned high and fallen, while the demand side of PS lacks positive guidance in the short term, and it is expected that the market will continue to consolidate.

 

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