1. Material Purity and Formula Stability

Jointion utilizes pharmaceutical-grade silica achieving 99.9% purity with precisely controlled fluoride content maintained between 2.8-3.2% to create optimal light diffusion while preserving structural integrity. Our proprietary formulation incorporates:

• 0.05% cerium oxide for enhanced UV resistance preventing yellowing over extended exposure periods
• 0.1% zirconia for substantially enhanced toughness and crack propagation resistance
• 0.01% cobalt ensuring consistent whiteness across production batches

We control all details right at the initial stage, securing quality from the very source. We consistently uphold the philosophy that quality is built into production, not just verified through testing — which is why we’ve earned the recognition of Corelle.