XNFP (XINNUO PUMP) was founded in 2017 and specializes in valve stem manufacturing. The products are processed through integrated turning and milling, ensuring high concentricity. The stem surface is polished to a mirror-finish precision, enabling smooth opening/closing with excellent sealing performance. High-quality materials are selected to provide high strength, good toughness, galling resistance, and corrosion resistance. The main product line includes a full range of valve stems.