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size:450*450*15mm features: 1) products are antipollution 2) joints: tongue&groove 3) available dimensions: 450*450*15 mm 500*500*15 mm 600*600*15 mm or other sizes that you want 4) thickness deviation: less than 0.20mm 5) density deviation: less than 4% 6) formaldehyde emission:less than 0.5 7)color: yellow 8)material : walnut as layer 9)quantity: 1 piece sale is ok when you buy the flooring, you can choose one piece as sample to check the surface and quality.