On November 28th, Henan Kaijie Water Treatment Co., Ltd.'s quotation for coal-grade powdered activated carbon is 5500 yuan/ton. The specifications of the coal-grade powdered activated carbon include domestic products with an iodine value of 800, produced by Henan Kaijie Water Treatment Co., Ltd., in accordance with the company's standards and specifications, which are 800 8. The validity period of this quotation is seven days. The quote provider is Henan Kaijie Water Treatment Co., Ltd.