On October 31, Henan Saiteng Environmental Protection Technology Co., Ltd. provided a quotation for phosphoric acid at 6400 yuan/ton. The specification of the product includes: intended use level: industrial grade; grade: premium; content of phosphoric acid (H3PO4) in the product: 85%. The validity period of this quotation is one day. The provider of the quotation is Aite (Zhejiang) Supply Chain Management Co., Ltd.