On October 31, Henan Kaijie Water Treatment Co., Ltd. quoted the price of coal-based powder activated carbon at RMB 3500 per ton. The specifications of coal-based powder activated carbon are: domestic product with iodine value of 500, Henan Kaijie Water Treatment Co., Ltd., enterprise standards, 5006. The validity period of this quote is 7 days. The quote provider is: Henan Kaijie Water Treatment Co., Ltd.