nylon base sychro mechanism manager chair

leather chair, executive chair, office furniture 1, grade 1 leather 2, good quality 3, resonable price 4,synchro mechanism genuine leather chair, office visitor chairs, manager office chairs 1, grade 1 leather 2, swivel office chairs 3, nylon base ITEMARCO2 29FUPHOLSTERYYIDA15-183MECHANISMsynchro mechanism P5ARMRESTplastic armrestsBASEnylonWEIGHTNet : 15.5 kg / pcs Gross : 17.5 kg / pcsBACK FOAMDensity : 27 kg / m3 Thickness : 4 cmSEAT FOAMDensity : 27 kg / m3 Thickness : 5 cmCASTORpu grayGAS LIFT100Dscrewback: 8*16 /3mechanism: 6*30 6*20 2armrest 6*354 / 6