On October 14th, Changzhou Yangtze Chemical Co., Ltd. provided a quotation for sulfuric acid at the rate of 660 yuan per ton. The specifications of the sulfuric acid include: grade: qualified; mass fraction/% of sulfuric acid ≥: 98; product grade: industrial; type: concentrated sulfuric acid. The validity period of this quotation is three days. The quoting entity is Changzhou Yangtze Chemical Co., Ltd.