Contemporary Luxury Modular Sofa Seating Solution 1,Tight sofa upholstery 2,Solid wood inner structure 3,High density foam 4 P I C T U R E Q U A L I T Y C O N T R O LFrame:1.Humidity is controled within 12%2.no scar exists in the frame;3.frame is surfaced well,no rind exists.Elastic:1.the elastic at the saddle should be with high elasticity2.thick is more than 2mm;3. transverse space among them ...