Features of our engineered wood flooring: 1) Wood species: white oak, jatoba, walnut 2) Size: 1860x190x15/4mm, 1860X148X15/4mm, 1860x189x21/6mm, 900x127x15/4mm,400-1200x125x14/3mm Strucrure:3 layer 1 strip and 3 strips (4mm top layer + 9mm pine/fir/poplar core + 2mm poplar bottom) Multi layer 1 strip (4mm top layer +birch plywood or poplar plywood) 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) Formaldehyde emission:E1 7) Quality warranty: one life time guarantee to the flooring structure and 25 years guarantee to the varnish 8)1mm Micro bevel edge perfect fitting 9) tongue & groove 10) Moisture is 8-10% 11) 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.