How does the inclusion of zinc borate or other biocides enhance WPC outdoor tree box longevity?

Wood-Plastic Composite (WPC) outdoor tree boxes are popular for their durability and low maintenance, but exposure to moisture, fungi, and insects can still degrade them over time. The inclusion of zinc borate or other biocides significantly enhances their longevity by providing robust protection against biological threats.

Zinc borate acts as a fungicide and insecticide, preventing mold growth and deterring termites or other wood-boring pests. Its low solubility ensures long-term effectiveness, even in wet conditions. Other biocides, such as copper-based compounds, offer similar protective benefits by inhibiting microbial activity that causes rot.

By integrating these additives during manufacturing, WPC tree boxes gain resistance to decay, reducing maintenance costs and extending service life. This makes them ideal for urban landscaping, parks, and other outdoor applications where durability is critical. The result is a sustainable, long-lasting solution that combines the aesthetic appeal of wood with the resilience of modern composites.