... A .we are factory B.we have CE certificate C.low density and high density D.best quality acoustic ceiling board ... low value Photo 1. Types:·little-stars series flowers·lovely-worms ... , 600×1200mmDensity: 350 - 450kg/m3 (high density),280-350kg/m3(low density)3. Thickness: 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, Other ...