According to rich profit, this kind of floor is not in the scope of ordinary citizens to consider, have certain economic strength  , the pursuit of high quality life consumer consumption objects is more appropriate.
According to the national standard of real wood floor level segment according to the regulations of the relevant national standard GB/T15036-94, the quality of real wood floor  : classy article, board face no crack, bug, decayed, bending, such problems as loose knot.
Class B board: board face has the obvious flaw and the plate price cut, only equivalent to gb regulation level of qualified products. Grey board  : processing used didn't paint colour "UV" drench lacquer craft, transparent paint, can reflect true colors.