... ,gas lift for all kinds of office chairs 2,chrome or powder coating are available 3,with high quality and best price Gas ... liftItem: HY-gas lift1,Material: Steel2,Quality: Airproof and durable3,Chrome or ... 400-600pcs/wooden case6,Function: It would be adjustable and extendable by force7,Our gas lift get the certificate of TUV, SGS, LGA ...