According to national level GB/T18103-2000, solid Mu Fu adds up to floor exterior quality to ask to include: Dead section, hole (wormhole) the respect such as brunet clip skin. The expert thinks the judgement of these features basically relies on the observation of naked eye, increase the size that measures this kind of blemish and decide integratedly quality conclusion is eligible.

Afore-mentioned exterior features often as close as the style attribute of lumber correlation. The line of depth interior mine with lumber qualitative material distributings, the angle of cut and in-house lumber sufferred environment influence to form tubal aperture to changing feeling view feature more or less. To blemish dimension decide, the brim that is pair of dead sections and aperture oil becomes angry undertake metrical and get. Accordingly, often can appear on judgement certain deviation. So, the expert thinks to feeling view quality decides, should abide by a few the following viewpoints:

One, the product of natural attribute, do the exterior to detect, its sampling should be had representative, can represent whole batch the exterior panorama of the product is basic jumping-off place.

2, should appear unqualified decide, because the basis is dead,the section is decided with the definition of hole. Looked to whether produce material of woodiness cell wall to decompose after local sampling. Commonly used method is to use a hand to grind, cannot grind powder. Dead perhaps division does not shed, be united in wedlock cheek by jowl with lumber.

3, to unqualified decide, for discreet for the purpose of, reinspect. Arrive especially taller the authoritative orgnaization of one class undertakes detecting. Taller the conclusion of the authoritative orgnaization of one class provides the power that collect a letter more.

As lumber diversification, the product of exterior color diversity drives the market. The variation of color of a few surfaces, product that uses natural state to undertake the style changes processing, detecting to these when judgement, need more discreet. And if exterior exterior is right the quality of the product influential should undertake managing changing detecting to this product, will decide the product is eligible finally.