1) wood species: russian white oak pre-finished and unfinsihed 2) size: a)total thickness 15mm, 18mm and 20mm.B)length from 300-1500mm and 600-2200mm. C)width 220mm, 1900mm, 180mm, 160mm, 150mm, 140mm, 130mm, 125mm, 120mm, 110mm, 83mm, 57mm etc. 3) varnish: high anti-scratch treffert uv lacquer made in germany 4) oil: made in denmark 5) glue: eco-friendly dynea made in finland 6) quality warranty: one life time guarantee to the flooring structure and 25 years guarantee to the varnish 7)1mm micro bevel edge perfect fitting 8) tongue & groove 9) moisture is 8-10% 10) grade: we can not but offer you the best grade. A)select grade = grade ab (70% a +30% b)natural grade = grade abc (50% a + 40% b + 10% c)rustic grade = grade bc (60% b + 40% c) White cartons with 2 times waterproof film inside and on pallets. Customer brand could be printed in the carton.