On November 3rd, Henan Kaijie Water Treatment Co., Ltd.'s quotation for coal-quality powder activated carbon is $4300 per ton. The specifications of the coal-quality powder activated carbon are: domestic product, iodine value 600, Henan Kaijie Water Treatment Co., Ltd. enterprise standard, 600, 6. The validity period of this quotation is 7 days. The quoting entity is Henan Kaijie Water Treatment Co., Ltd.