he panel is thickness available 35 or 40 mm made of homogeneous calcium sulphate board, bottom is galvanized steel sheet / aluminum sheet. The finish coverd ceramic tile\ marble or others comply with the customer's requirement. Edge is 4 PCS black PVC trim along each side of the panel. This panel has a waterproof, fireproof, high wear-resistances, acid and alkali-resistance, easy maintenance, low environmental pollution, and long using life.