The company is strong
　　• Liaoning Yiliansheng New Materials Co., Ltd., formerly Tangshan Yiliansheng Roll Co., Ltd., is a professional manufacturer and researcher of high-speed steel rolls in China. It has been awarded the "Production Base of Cast High-Speed Steel Rolls" by the China Foundry Association and the "Specialized, Unique, Excellent, and New" advantageous enterprise of China Foundry.
　　• It has established a municipal-level engineering technology research center for high-speed steel rolls, with technical support from the high-speed steel roll R&D expert group of China Steel Research Technology Group Co., Ltd.

　 　Leading Technology R&D
　　• The R&D team, headed by senior engineer Gong Kailing, is the first team in China to research and produce high-speed steel rolls, and also the inventor of the first high-speed steel roll patent in China. It holds 9 national invention patents, 7 of which are for high-speed steel roll manufacturing technology.
　　• In 2018, it was responsible for drafting and formulating China's first group standard, "Cast High-Speed Steel Rolls" (T/CFA02010116.1-2019). It is one of the main drafters of China's current national roll standards GB/T1504—2008 "Cast Iron Rolls" and GB/T25825—2010 "Hot-rolled Steel Plate and Strip Rolls".

　　 Rich Product Series
　　• High-speed steel rolls are manufactured in series according to the characteristics of rolled materials, rolling mill stands, and rolling characteristics. They cover various uses, including finished stands, splitting stands, intermediate stands, roughing stands, and controlled cooling and controlled rolling production lines for bar mills. New generation high-strength, heat-crack resistant, and high-wear resistant high-speed steel rolls for use in headless rolling production lines for bar continuous rolling mills are also under development.

　 　Superior Product Performance
　　• Good wear resistance: For high-speed steel rolls used in K2 and K5 stands for rolling threaded steel, carbides are mainly MC type, M7C3 type, and M6C type, with high microhardness, fine and uniform particle size. Wear resistance is further enhanced with increasing vanadium content.
　　• Uniform hardness: By optimizing the composition and improving the heat treatment process, the surface hardness uniformity of the roll body is no more than 2HSD, and the hardness difference of the working layer is no more than 1HSD, improving the cutting performance and use stability.
　　• Long service life: The comprehensive service life is about 20% higher than that of similar products, with less profile wear and only 2-3mm of grinding per time, increasing the number of roll uses.
　　• High rolling quality: It is conducive to the negative tolerance control of rolled materials, significantly improving the yield, dimensional accuracy, and surface quality of rolled materials, and enhancing the market competitiveness of products.

　　 Price and Service Advantages
　　• The company's products have a high price-performance ratio, and the sales price does not increase while improving the comprehensive performance. Personalized products and services can also be provided according to the actual needs of different users.