... -quality raw materials:hardwood, FIR core,tubularchipboard,honeycomb,laminated fir,MDF board with wood veneer surface. We can make wood doors according to your special ... ,pine,etc.2)Door structure:Rails/Stiles: Finger joint hardwood or softwoodCore: laminated fir, chipboard, tubular chipboard, wood strip, honeycomb, hollow, etc.Door skin ...