On December 5, Henan Kaijie Water Treatment Co., Ltd.'s quotation for activated carbon is 4800 yuan/ton. The specifications of the activated carbon are: domestic, iodine value 300, Henan Kaijie Water Treatment Co., Ltd., enterprise standard 300. The validity period of this quotation is 7 days. The provider of this quotation is Henan Kaijie Water Treatment Co., Ltd.