Does granite composite sink stain？
2026-07-30
Whether a granite (quartz) composite sink will stain depends entirely on its quality. Simply put: high-quality products are almost stain-resistant, while inferior products are prone to staining.
Material Composition: High-quality granite sinks are synthesized from PMMA resin and quartz sand through a thermosetting process. Their dense, non-porous structure prevents soy sauce and red wine from seeping in. The production process for PMMA-type granite sinks is very complex, requiring expensive molds and high-tech equipment, resulting in higher costs. Many custom granite sinks on the market are synthesized from unsaturated resin (UPR) and quartz sand at room temperature. These products have low density, micropores, and are prone to staining.
Furthermore, its low surface hardness makes it easily scratched, leaving many tiny pits that trap dirt and grime, making it difficult to clean.
Is the material incorporating anti-fouling nanomaterials? High-quality granite sinks incorporate nano-anti-fouling materials into the material, giving the surface a lotus leaf effect that absorbs water and oil, providing excellent self-cleaning properties, preventing dirt from sticking, and making cleaning easy.
Don't be misled by "false advertising": Some smaller brands claim to be stain-resistant, but they may actually have applied a temporary coating.
Major brands (such as Platinum Longoria and NAITRON) use a fully dyed material; the color is uniform even when the surface is scratched off—this is truly "colorfast."
Therefore, to avoid future headaches, remember these points when purchasing:
• Opt for darker colors (such as black or dark gray), as they offer greater versatility.
• Choose reputable brands (such as BLANCO and NAITRON) for guaranteed materials and craftsmanship.
• Daily precautions: Avoid using steel wool; promptly remove limescale with a specialized cleaning agent.
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Material Composition: High-quality granite sinks are synthesized from PMMA resin and quartz sand through a thermosetting process. Their dense, non-porous structure prevents soy sauce and red wine from seeping in. The production process for PMMA-type granite sinks is very complex, requiring expensive molds and high-tech equipment, resulting in higher costs. Many custom granite sinks on the market are synthesized from unsaturated resin (UPR) and quartz sand at room temperature. These products have low density, micropores, and are prone to staining.
Furthermore, its low surface hardness makes it easily scratched, leaving many tiny pits that trap dirt and grime, making it difficult to clean.
Is the material incorporating anti-fouling nanomaterials? High-quality granite sinks incorporate nano-anti-fouling materials into the material, giving the surface a lotus leaf effect that absorbs water and oil, providing excellent self-cleaning properties, preventing dirt from sticking, and making cleaning easy.
Don't be misled by "false advertising": Some smaller brands claim to be stain-resistant, but they may actually have applied a temporary coating.
Major brands (such as Platinum Longoria and NAITRON) use a fully dyed material; the color is uniform even when the surface is scratched off—this is truly "colorfast."
Therefore, to avoid future headaches, remember these points when purchasing:
• Opt for darker colors (such as black or dark gray), as they offer greater versatility.
• Choose reputable brands (such as BLANCO and NAITRON) for guaranteed materials and craftsmanship.
• Daily precautions: Avoid using steel wool; promptly remove limescale with a specialized cleaning agent.
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