On the afternoon of May 18, futures prices were weak and volatile. The offer for some domestic sources in the methanol market in Changzhou was based on around 2430 yuan/ton. The main focus was negotiations, and the atmosphere was weak; the theoretical price for domestic sources to the surrounding areas was based on 2,450 - 2,460 yuan/ton; A few small orders in Zhangjiagang were negotiated with reference to 2350 yuan/ton, and the offer was weak.