On November 12, Henan Kaijie Water Treatment Co., Ltd.'s quotation for coal-based powdered activated carbon is 2400 RMB/ton. The specifications of the coal-based powdered activated carbon are: domestically produced, iodine value 300, Henan Kaijie Water Treatment Co., Ltd., enterprise standard 300 4. The validity period of this quotation is 7 days. The quoting entity is Henan Kaijie Water Treatment Co., Ltd.