... chair, executive chair, visitor chair 1)leaher/PU 2)chrome frame 3)multi-function Office medern swivel chair, office leather ... visitor chair1)leaher/PU material for seat and back2)chrome iron frame and armrest 3)multi-function/synchro mechanism4)5 ... multi-function, butter fly, synchro mechanism4. base: 5-star base, polish aluminium, high grade nylon, chrome iron base etc.- Hardware:1. provided by well ...