On November 1, Henan Kaijie Water Treatment Co., Ltd.'s quotation for coal-grade powder activated carbon is 4800 yuan/ton. The specifications of the coal-grade powder activated carbon are: domestically produced with an iodine value of 700; Standard by Henan Kaijie Water Treatment Co., Ltd.; 700 6. The validity period of this quotation is 7 days. Quotation provider: Henan Kaijie Water Treatment Co., Ltd.