On November 4, Changzhou Yangtze Sulfuric Acid Co., Ltd. provided a pricing quote for sulfuric acid at 900 yuan per ton. The specifications of the sulfuric acid are as follows: grade: qualified product; mass fraction/% of sulfuric acid ≥: 98; product grade: industrial-grade; type: concentrated sulfuric acid. The validity period of this quote is 3 days. The provider of the quoted price is Changzhou Yangtze Sulfuric Acid Co., Ltd.