When sourcing MDF (Medium Density Fiberboard) kitchen furniture, you must prioritize Density and Grade. Ensure the MDF has a density of at least 700-800 kg/m³ for structural stability. For kitchen environments, it is critical to specify Moisture-Resistant MDF (MR-MDF), often tinted green, to prevent swelling in high-humidity areas. Additionally, verify the Formaldehyde Emission Standards, insisting on E1 or E0 grade certifications to ensure indoor air quality and compliance with international health regulations.