On July 4, the price of carbon black in Hebei Zhonglilian was stable. The price of wet-process N220 was 10000 yuan/ton, the price of wet-process N330 was 9000 yuan/ton, the price of wet-process N550 was 9400 yuan/ton, and the price of wet-process N660 was 9000 yuan/ton. It is mainly engaged in the distribution of carbon black and acting as an agent for Shanxi carbon black. The downstream customers are mainly rubber products companies, and they negotiate with real orders.