On December 11, Henan Kaijie Water Treatment Co., Ltd.'s quotation for coal-grade powdered activated carbon is 7200 yuan/ton. The specifications of the coal-grade powdered activated carbon: domestic product, iodine value 900, Henan Kaijie Water Treatment Co., Ltd., corporate standard, 900, 10. The validity period of this quotation is 7 days. Quotation provider: Henan Kaijie Water Treatment Co., Ltd.