On October 13, Changzhou Yangtze Sulfuric Acid Co., Ltd.'s quotation for sulfuric acid is 660 RMB per ton. The specifications of the sulfuric acid are: grade: qualified product; mass fraction/% of sulfuric acid ≥: 98; type: industrial-grade; type: concentrated sulfuric acid. The validity period of this quotation is 3 days. The quoting party is Changzhou Yangtze Sulfuric Acid Co., Ltd.