On November 19th, Henan Kaijie Water Treatment Co., Ltd. provided a quote for coal-grade powder activated carbon at 4300 yuan per ton. The specifications of the coal-grade powder activated carbon are as follows: domestic product, iodine value of 600, Henan Kaijie Water Treatment Co., Ltd. enterprise standard, 600 6. The validity period of this quote is 7 days. The quote provider is Henan Kaijie Water Treatment Co., Ltd.