The durability of plastic chairs can be influenced by various factors, and the use of virgin or non-virgin plastic is one of them. Here's a general comparison between the two:

1. *Virgin Plastic:*
   - Virgin plastic is made from new, unused raw materials. It has not been previously processed or used in any other product.
   - Virgin plastic chairs are generally more durable than their non-virgin counterparts. They tend to have better structural integrity and are less prone to degradation over time.
   - The manufacturing process of virgin plastic allows for more consistent quality, and the chairs may resist wear and tear better.

2. *Non-virgin (Recycled) Plastic:*
   - Non-virgin or recycled plastic is made from post-consumer or post-industrial recycled materials. It is processed and reused to create new products.
   - Chairs made from recycled plastic may have slightly lower durability compared to virgin plastic chairs. The recycled material might have undergone some degradation during its previous use.
   - However, advancements in recycling technology and processes have improved the quality of recycled plastic, making it more suitable for various applications.

3. *Factors Affecting Durability:*
   - Besides the type of plastic used, other factors significantly impact the durability of plastic chairs. These include the design, thickness of the material, manufacturing process, and the environmental conditions to which the chairs are exposed.
   - Chairs made from high-quality non-virgin plastic can still be quite durable, especially if they are designed and manufactured well.

4. *Environmental Considerations:*
   - Non-virgin plastic chairs contribute to recycling efforts and the reduction of new plastic production. Choosing recycled plastic products aligns with environmental sustainability goals.
   - Virgin plastic chairs may have a larger environmental footprint due to the use of new raw materials.

In summary, while virgin plastic chairs are generally considered more durable, advancements in recycling technologies have led to high-quality non-virgin plastic products. When choosing between the two, consider factors such as the specific application, design, and environmental considerations. Additionally, check the product specifications and reviews to ensure that the chosen plastic chairs meet your durability requirements.