... ,AC4 2.Core:Brown or Green HDF 3.HDF laminated flooring EN 13329,Class: 31,32, 33, AC1,AC2, AC3, AC4 ... . Abrasion Resistance: AC2, AC3, AC4, AC5 Available Surface: Crystal Surface, Hand-scraped Surface, Peal Surface, High Gloss Surface, Real Wood Texture Surface ...