oak 3-layer engineered wood flooring large living room floor european style antique room floor crack floor european

wood floor made of different wood species, size:1860*190*15/4mm, abc, real wood features: 1) products are antipollution 2) joints: tongue and groove 3) available dimensions: 1860*190*15/4mm, or other sizes that you want 4) thickness deviation: less than 0.20mm 5) density deviation: less than 4% 6) formaldehyde emission:less than 0.5 7)grade: ab :cd=4:6