About viseray
viseray is a specialty alumina supplier based in China, serving customers across Asia, Europe, and the Middle East. We produce high-purity calcined alumina, reactive alumina, tabular alumina, and custom-grade aluminum oxide powders for demanding industrial applications.
Founded in 2015, we combine deep materials expertise with responsive customer service. Our team includes ceramic engineers and process specialists who work directly with customers to match the right product to each application — whether it's a standard refractory lining or a next-generation solid-state battery.
We don't just sell powder. We solve material challenges.
Headquarters
Changsha, Hunan, China — in the heart of China's refractory materials corridor.
Expertise
Calcination, grinding, classification, and surface treatment of alumina powders. Custom particle size distribution from 0.5μm to 5mm.
Markets
Refractories, advanced ceramics, precision polishing, thermal interface materials, flame retardants, and battery materials.
Why viseray
Consistent quality
Every batch is tested for particle size distribution, specific surface area, alpha-phase content, and chemical purity. Certificate of Analysis included with every shipment.
Custom formulations
Need a specific D50? A narrower distribution? Surface modification? We adjust our process to match your specification — not the other way around.
Technical support
Our engineers speak your language. XRD, SEM, BET, laser diffraction data — we help you interpret it and optimize your process.
Global logistics
Reliable shipping to ports worldwide. Standard packaging: 25kg bags, 1-ton bulk bags, or custom packaging on request.