On September 18, futures were running weak, and the basis of Jiangsu Taicang methanol market strengthened. In the morning, Taicang spot was 2,390 - 2,410 yuan/ton, and the basis difference between spot and mid-month real orders was +25~+30 yuan/ton; the basis difference was +35~+38 yuan/ton; the basis difference was traded at +54~+60 yuan/ton, and the noon session negotiations have strengthened to +58~+65 yuan/ton; the basis difference negotiations at 11 were +60~+70 yuan/ton.