On January 6, Weifang Shengxing Chemical Co., Ltd. quoted the ex-factory price of agricultural-grade potassium nitrate at 4,250 yuan/ton, an increase of 100 yuan/ton compared to the previous quotation date, with an annual production capacity of 100,000 tons of potassium nitrate. PriceSeek analysis of potassium nitrate, long-short score: +1. The ex-factory price of agricultural-grade potassium nitrate from Weifang Shengxing Chemical has risen by 100 yuan/ton to 4,250 yuan/ton, reflecting tightening spot market supply or increased demand, which directly supports the spot price. The annual production capacity of 100,000 tons provides contextual support, but the significant increase indicates short-term positive factors. The score of +1 indicates a generally positive outlook, as the increase, while not extreme, has positively influenced market expectations.