On July 17, futures were operating in a volatile afternoon. Some domestic sources of goods in the methanol market in Changzhou were quoted at around 2,230 - 2,240 yuan/ton, and the basis difference was quoted at around +5 yuan/ton; domestic sources were sent to surrounding areas at theoretical prices or references were around 2,340 - 2,380 yuan/ton; Zhangjiagang region negotiated with reference to 2,230 - 2,240 yuan/ton, and the basis difference was quoted at +5 to 10 yuan/ton.