30+ YEARS OF EXPERIENCE IN CARBON INDUSTRY

As a sales representative for Rongxing electrode paste, I often highlight one key product advantage when developing clients: the superior quality and guaranteed reliability of Rongxing electrode paste. However, customers usually don't buy into this claim simply because no salesperson would admit their own product is subpar—how can we be sure that our quality is truly good? Therefore, we need to back up our claims with concrete reasons. Generally speaking, high-quality electrode paste can be verified through several aspects: compatibility of technical specifications, premium raw materials, high production stability, quality inspection reports, and customer feedback. When all these factors are positive, it's safe to say the product meets high standards. Let’s now take a closer look at how Rongxing controls its raw materials.

It is widely known that calcined coal serves as the aggregate in electrode paste, and its quality directly affects the performance of the final product. Rongxing Carbon uses authentic Ningxia Taixi coal, renowned for its low volatility, low ash content, high carbon content, low electrical resistance, and high hardness—making it an ideal natural raw material for electrode paste. The carbon content of Taixi coal is 20% higher than that of Shanxi anthracite, and its price is 30% higher. Since ancient times, Ningxia Taixi coal has been called "black gold."

The binder used in Rongxing electrode paste is medium-temperature asphalt produced by state-owned large-scale manufacturers. Industry peers know that medium-temperature asphalt is more expensive due to its unique advantages: its softening point typically ranges between 70–110°C, offering lower temperature sensitivity; it has excellent fluidity, making it easy to mix with aggregates, and through modification processes, forms a three-dimensional network structure that enhances fatigue resistance and bonding strength. Additionally, it emits significantly fewer harmful substances such as benzo(a)pyrene during production. As a result, medium-temperature asphalt generally costs over 200 yuan per ton more than conventional asphalt.

Moreover, other additives including calcined petroleum coke, graphite powder, and residual anodes are sourced from suppliers with whom Rongxing has maintained long-term partnerships—over ten years in most cases—and all are major manufacturers. This ensures consistent and reliable raw material quality. Experience has proven that Rongxing’s approach is correct: strict control over supplier selection and rigorous quality oversight of raw materials are essential to maintaining the high quality of Rongxing electrode paste.