What does it mean that the water absorption of ceramic tiles is below double zero?

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Ceramic tiles with low water absorption have the following advantages:
Durability: Low water absorption ceramic tiles have good durability. They are less susceptible to humid environments and temperature changes, making them more durable and less prone to cracking or damage.
Anti pollution: Low water absorption ceramic tile surfaces are less prone to penetration of stains or liquids, making them easier to clean and maintain. They have stronger resistance to oil stains, dirt, and color penetration.
Anti slip performance: Low water absorption ceramic tiles have good anti slip performance in humid environments. Their surface moisture is not easily accumulated, reducing the risk of slipping and falling, making them particularly suitable for bathrooms, kitchens, and other damp areas.
Color stability: Low water absorption ceramic tiles have a more stable color and texture during long-term use. They are not easily faded or affected by sunlight and chemicals.
It should be noted that the water absorption rate of ceramic tiles may also vary depending on different types and manufacturing processes. Therefore, when selecting ceramic tiles, choose tiles with a suitable water absorption range based on the specific usage environment and needs, in order to achieve better usage effects and durability.