When selecting gridwall panels, prioritize high-grade cold-rolled steel for structural integrity. For the finish, powder coating is the industry standard for indoor retail use as it offers a smooth, durable surface resistant to chipping. If the panels are intended for outdoor markets or high-humidity environments, ensure they have a chrome plating or galvanized finish to prevent rust and corrosion. Always verify that the coating is lead-free and non-toxic to comply with international safety standards.