Advanced surface treatments like Nano-glazing increase the price but provide self-cleaning properties and antibacterial protection, which are highly sought after in B2B hospitality sectors. The firing temperature in the kiln is also critical; basins fired at over 1280°C achieve a water absorption rate of less than 0.5%, ensuring the product does not crack or discolor over time. Hand-polished edges and custom color finishes (matte black, gold, etc.) typically add a 15-25% surcharge compared to standard gloss white.