Three-layer or Multilayer engineered wood flooring for indoor. Oak and Pine. ... Groove. CE Certification Product description:1.type:Three-layer or Multilayer engineered wood flooring 2.top layer: oak,pine3.key wood: birch plywood4 ... *2200~2400 5.moisture content:7-9%6.surface: UV layer, nature oil, unfinished, hand scraped and brushed, brush & oiled, stained7 ...