On November 22nd, Henan Kaijie Water Treatment Co., Ltd. quoted a price of 6000 yuan per ton for activated carbon, with specifications as follows: domestically produced, iodine value 600, and by Henan Kaijie Water Treatment Co., Ltd., in accordance with the company's standards, at 600. The quoted price is valid for 7 days. The provider of the quote is Henan Kaijie Water Treatment Co., Ltd.