... Warranty 5.SGS Test, ISO 9000 Certificate,OEM Products NameGas spring/gas lift/gas cylinder/gas strutUseUsed for boss chair/ ... 140mm, 160mmBar Chair: 180mm, 200mm, 260mm, 330mmSampleAll the samples are free, just freight will be undertaken by your side. Or you ... price if you need Company NameChangzhou Nantai Gas Spring Co., Ltd IntroductionNANT Gas Spring is a manufacture in this office chair ...