... mechanism: Y-19 mechanism, seat height adjust, back tilt, back can be fixed not to tilt. We ourself ... 2000 quality system authentication. chair specification: Size of back: 52x75CMSize of seat: 51x52CMHigh of Seat: 45~ ... : usually 20-30days, according to the qauntity u want2.payment term:30%T/T3.port: Shanghai ... increasing spread every year. Dear friends, if u are interested in our products, pls feel free ...