When sourcing PVC panels, you must prioritize material density and thickness to ensure structural integrity. For wall applications, a thickness of 5mm to 10mm is standard, while ceiling panels are typically lighter at 7mm. Ensure the PVC content (resin percentage) is between 40% and 60%; higher PVC content generally results in better flexibility and impact resistance. Additionally, verify the surface treatment, such as Hot Stamping, Printing, or High-Gloss Lamination, as this determines the panel's resistance to scratches and UV fading.