Jiangsu Rongfa provides high-quality heavy-duty gearbox ring gears for mining machinery, metallurgical equipment, cement mills, tunnel boring machines, and large construction equipment. Using radial-axial ring rolling technology, we produce large-diameter, high-precision seamless ring forgings with dense microstructure and continuous grain flow.Leveraging advanced equipment, scientific management, and an excellent technical team, we deliver reliable ring gear forgings for heavy-duty transmission systems.