On May 23, the tax-inclusive market price of carbon black N220 in the Shandong market: 8,300 - 8,600 yuan/ton, the tax-inclusive market price of N330: 7,300 - 7,600 yuan/ton, the tax-inclusive market price of N550: 7,600 - 8,000 yuan/ton, and the tax-inclusive market price of N660: 7,300 - 7,600 yuan/ton. The venue is waiting for new news guidance.