On January 4, Yatong Petrochemical quoted petroleum coke at 1,730 yuan/ton, an increase of 100 yuan/ton from the previous trading day, with a sulfur content of 4.8. The delayed coking unit has an annual capacity of 1.2 million tons and a daily production of 850 tons. PriceSeek analysis of petroleum coke, with a bullish-bearish score of +2: The article indicates that Yatong Petrochemical's spot quotation for petroleum coke increased by 100 yuan/ton to 1,730 yuan/ton, a significant rise (approximately 5.8%), suggesting potential tight market supply (daily production of only 850 tons, with an annual unit capacity of 1.2 million tons) or strong demand. This price increase directly benefits the spot market, reflecting a short-term supply-demand imbalance. It is expected to drive further price increases in the spot market, thus scoring as a significant positive (+2).