On November 20, Henan Kaijie Water Treatment Co., Ltd.'s quoted price for coal-based tar pitch spherical activated carbon is 15,000 yuan per ton. The specifications of the coal-based tar pitch spherical activated carbon are: Kaijie φ4mm, Henan Kaijie Water Treatment Co., Ltd. GB/T7702.7-2008, 1000. The validity period of this quote is 3 days. The quoted provider is: Henan Kaijie Water Treatment Co., Ltd.