When selecting PVC panels, the PVC content percentage is the most critical factor; high-quality panels typically contain 40% to 60% PVC resin to ensure a balance between flexibility and hardness. You must verify the surface treatment technology, such as hot stamping, high-gloss printing, or lamination, as these determine the panel's resistance to fading and scratches. Additionally, check the weight per square meter—heavier panels usually indicate thicker wall structures and better impact resistance. For ceiling applications, ensure the thickness is at least 5mm to 7mm, while wall panels should ideally be 8mm to 10mm for structural integrity.