... humidity control between 12-15%, S shape spring , paper wire , plastic net, webbing ,lining, ect. 2. FOAM CUTTING&GLUE ON THE ... carefully cutting. Very professional and careful stitching to be the sofa cover. Different kinds of leather ,genuine or artifical leather ,import ... protect the goods well enough):Before packing : A. clean the sofa carefullyB. cut the extra thread come outside.C. check the ...