... board 6mm 2.Factory owns 4 patents 3.Good quality. 4.Fast lead PRODUCT IS SAME AS ... rough surface3. Combined with many fashion colors, making good atmosphere, natural, harmonious, luxury, or high artistic ... outside house. Combined with many fashion colors, making good atmosphere, natural, harmonious, luxury, or high artistic effect ... sales office. Welcome visit us. GOOD QUALITY NOISEPROOF BOARD 9mm LDB