On May 18, the soda ash market in North China was operating weakly and steadily. As of now, the ex-factory price of light soda ash is 2,450 - 2,550 yuan/ton, and the delivery of heavy soda ash is 2,800 - 2,900 yuan/ton. The downstream market demand is sluggish, and the market maintains on-demand procurement. The inventory of some manufacturers has increased, and enterprises are under great pressure. Currently, some manufacturers in the market are not making quotations for the time being and waiting for a new round of prices to be formulated at the end of the month. The soda ash market continues to operate weakly.