January 23 (Reuters) - On January 22, the closing price of the para-xylene (PX) market in the United States rose by $18 per ton, reaching $957–967 per ton FOB U.S. Gulf. According to Chempricehub's analysis of PX, the long-short score stands at 1.5. The spot price of PX in the U.S. increased by $18 per ton, closing at $957–967 per ton FOB, indicating tight market supply and demand, with strong demand or reduced supply directly benefiting spot prices. Combined with futures data, PX futures contracts such as 2609 rose by 218 yuan per ton, and 2612 increased by 104 yuan per ton, reflecting optimistic market expectations. Changes in open interest suggest capital inflows, which may further drive futures prices upward, indicating strong short-term bullish sentiment.