For cast steel or electric furnace smelting in the casting industry, the core of carburizing technology is the use of low sulfur, low nitrogen, high porosity carburizing agent.

Petroleum coking carburizer main producing areas of Liaoning, Tianjin, Shandong and other places. Among them, Liaohe Oilfield is the world origin of low sulfur crude oil, so the sulfur content in petroleum coke is the lowest.

The porosity of carburizing agent also plays a vital role in the carburizing effect and the absorption rate of carburizing agent. Through the production process, the pores of petroleum coke carburizing agent are all opened to maximize the specific surface area of carburizing agent, and the product has super permeability and can be quickly dissolved into the steel, so as to maximize the absorption rate and efficiently carburizing.