This document stipulates the terms and definitions, evaluation index system and grade classification of the "Leader" standard evaluation of wooden flooring. This document is applicable to the enterprise standard level evaluation of wooden flooring products such as solid wood flooring, solid wood composite flooring, impregnated paper laminated wooden flooring, and bamboo laminated timber flooring. Relevant agencies can refer to this document when formulating the "Top Runner" assessment plan for corporate standards. Enterprises can also refer to it when formulating enterprise standards.