Analysis: On May 15, the price of liquid ammonia in the Shandong region rose. According to the commodity market analysis system of the Business Sheets, the daily increase in Shandong was 2.06%. The main reason is that some units in the northern main production areas were shut down for maintenance, leading to a reduction in supply and benefiting the market. On Wednesday, large factories in Shandong and its surrounding regions such as Hebei and Henan generally raised prices by 50-100 yuan/ton. The market's speculation atmosphere was strong, with dealers following up with higher bids. Downstream fertilizer companies have been stopping operations one after another, causing prices to rise in tandem. Currently, the mainstream price in the Shandong area ranges from 3100 to 3300 yuan/ton. Forecast: The failure to operate by northern liquid ammonia enterprises will continue for a while, and the tense supply and demand situation will not change. In the future, it may form support to the surrounding areas. It is expected that ammonia companies will mainly maintain prices and chase up prices, making it difficult for the ammonia market to fall short in the short term. Long-term attention should be paid to the resumption of work by ammonia companies.