For each bundle, ensure 90% four sides clean ( no knots/no cracks/no blue stain/no waterline...)a
For each board, ensure one big side clean ( no knots/no cracks/no blue stain/no waterline...),if
a)Ensure one big side clean（no cracks/ knots/blue stain/waterline.) but waterline,blue stain and
For each board, ensure 50%~60% clean(no waterline/knot/blue stain/cracks)， but the rests allow wa
