For the economy segment, focus on MDF (Medium Density Fiberboard) or PS (Polystyrene) frames, which offer a wood-like appearance at a lower cost and are lightweight for shipping. For the premium segment, prioritize solid hardwoods (like oak, walnut, or pine) or anodized aluminum. Ensure that the glazing material is specified: tempered glass is preferred for clarity and scratch resistance, while shatterproof acrylic (Plexiglass) is essential for large-scale frames or e-commerce shipping to prevent breakage.