About Us
25 Years of Manufacturing Excellence
Professional Manufacturer of High-Purity Fused Silica
ZNH REFRACTORIES CO., LTD is a professional manufacturer and exporter of high-purity fused silica, located in Zhengzhou, China. With over 25 years of manufacturing experience, we specialize in A Grade, AB Grade, and B Grade fused silica for foundry, investment casting, and refractory applications.
Our products are manufactured under strict quality control systems to ensure stable chemical composition, consistent particle size, and reliable performance. ZNH fused silica is trusted by customers in North America, Europe, and other global markets.
Some Cool Facts
Numbers Speak For Themselves
Quality comes first at ZNH Refractories. From raw material selection to melting, crushing, grading, and final inspection, every production step is strictly controlled. Our factory operates on a 20-mu industrial site with a professional team of 20 skilled workers, ensuring stable output and consistent quality for every batch of fused silica.
Manufacturing Capability
Our production facility covers a total area of 20 mu, with an 8,500 m² modern workshop. The annual output of high-purity fused silica reaches 20,000 metric tons, allowing us to support long-term supply and large-volume industrial orders.
Quality Control & Testing
ZNH Refractories is equipped with complete inspection and testing facilities, including chemical analysis, particle size control, and performance testing. Each batch of fused silica is strictly inspected before delivery to ensure stable quality and reliable application results.