On May 29, the domestic flake caustic soda export market performed well. Currently, Xinjiang Zhongtai's FOB Qingdao is USD 460/ton, Erong's FOB Qingdao is USD 455/ton, Inner Mongolia Junzheng's FOB Qingdao is USD 452/ton, and Yihua Group's FOB Dalian is USD 455/ton. This week, the shipment volume for each manufacturer has been average.