Hollow Particle Board Formaldehyde releasing: E1, E2 Thickness: 18mm,25mm,30mm,33mm,38mm Density:680-750kg/m3 Grade:AAA,AA Hollow Particle BoardSize:1200x2500mm or as per the customers' requests;Core:poplar,pine,mixed wood; Formaldehyde releasing: E1, E2;Thickness: 18mm,25mm,30mm,33mm,38mm;Density:680-750kg/m3Grade:AAA,AA Usage:the core of the flat door;If you have any question,please contract to ...