On December 8th, Henan Kaijie Water Treatments quoted a price of 4,800 yuan per ton for activated carbon. The specifications of the activated carbon are: domestic product with an iodine value of 300, produced by Henan Kaijie Water Treatment Co., Ltd., and complying with the company's standards, with an iodine value of 300. The validity period of the quoted price is 7 days. The quoting entity is Henan Kaijie Water Treatment Co., Ltd.