For the American series product, we always use solid wood for main structure and drawer box, plywood/MDF for panel. All materials are meet CARB 2 requirement. And the surface finished is 7 times painting, ensure the wood materials in a standard water absorption status, 10% is our standard. The reasonable structure design and standard production process can make the product avoid the regular cracking problem. Choosing the right American vanity manufacturers, you must pay attention for their product structure design, painting and the wood materials. SHKL is a not bad choice, welcome to view our products and contact with us in needs.