... best quanlity 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 material2 ... 50000 products within a month with high standard quality chair base,high quality, popular design, reasonable price