... and price This product passed SGS test used for chair chair base ,chair partItem :D037Material: NylonQ'TY/CTN: 5pc/cartonSize ... :270mm,280mm,320mm,330mm,340mm,350mmOffice chair base:1.Chair base made by PA66+GF, firm and durable ... than 10 years produce experience in producing 50000 products within a month with high standard quality chair base,high quality, popular design, reasonable price ...