On November 11, Henan Kaijie Water Treatment Co., Ltd.'s quoted price for coal-quality powdered activated carbon is 3500 yuan/ton. The specifications of the coal-quality powdered activated carbon are: domestic, iodine value 500, Henan Kaijie Water Treatment Co., Ltd., enterprise standard, 500, 6. The validity period of this quote is 7 days. The quote provider is Henan Kaijie Water Treatment Co., Ltd.