On August 18-19, 2022, participated in the 9th National Exchange on comprehensive utilization of coke oven gas, pollution control, coke quenching and acid production from desulphurization waste liquid of coking industry held in Gaoping, Shanxi. Conduct technical and market exchanges with coking enterprises, environmental protection companies and equipment manufacturers. At the same time, the mechanical seal specially designed for ammonium sulphate mother liquor pump in coking industry is very good in the market. Our company won the technical innovation award at the coking conference.