The Best Grosfillex Commercial Furniture for Outdoor Dining
https://www.scribd.com/document/991428453/The-Versatility-of-Nardi-Adirondack-Furniture-for-Various-Settings-126342
The material itself remains usually an engineered thermoplastic, most commonly polypropylene or heavy-duty polyethylene, though reputable commercial companies protect their proprietary mixes much like soft drink giants keep secret their ingredients