On October 21, Henan Kaijie Water Treatment Co., Ltd. provided a quote for wood powder activated carbon at 6,600 yuan per ton. The specifications of the wood powder activated carbon include domestic products with an iodine value of 800 and conforming to Henan Kaijie Water Treatment Co., Ltd.'s enterprise standards. The quoted price is valid for a period of 7 days. The quote was provided by Henan Kaijie Water Treatment Co., Ltd.