On December 2nd, Henan Kaijie Water Treatment Co., Ltd. provided a quotation for coal-grade powder activated carbon at 5500 yuan per ton. The specifications of the coal-grade powder activated carbon are: domestic product with an iodine value of 800, manufactured by Henan Kaijie Water Treatment Co., Ltd., in accordance with enterprise standards, with an iodine value of 800 and eight grades. This quotation is valid for a period of seven days. The quote provider is Henan Kaijie Water Treatment Co., Ltd.