On November 21, Henan Kaijie Water Treatment Co., Ltd.'s quote for coal-quality powder activated carbon is 7,200 yuan per ton. The specification of the coal-quality powder activated carbon includes: domestic product with an iodine value of 900, produced by Henan Kaijie Water Treatment Co., Ltd., in accordance with the enterprise standards, with a specification of 900 and 10. The validity period for this quote is 7 days. The quote provider is Henan Kaijie Water Treatment Co., Ltd.