... 11-13mm, basically is a fast - growing wood, more than 75 are fast - growing wood, high quality wood below 25 are ; multilayer parquet, surface ... layer is usually 0.3-2.0mm, high quality wood is less than 10 per cent, more than 90 are ... fast - growing wood. Therefore dramatically improve wood utilization rate, in particular, save a lot of high quality wood, in line with national ...