1,chrome plate frame and PU cushion with molded sponge 2,small and mixed order accepted 3,OEM welcomed 4. ... PVCSpecification1,Full dried solid hardwood frame,undergone anti-worm and polish treatmentHumidity control between 12%-15%,(internaional occean transport ... standard2, Metal coil springs and fabric rubber with rust and moisture proofing treatment3, High density elasticity foam ...