NANTAI 40mm stroke chromed gas lifts for boss chair
gas lift for swivel chairs,gas spring,gas lift for chairs,locking-type gas spring,types of springs,customized gas spring
1.Type                                
Class 2 ---Φ28 thickness is 1.5mm,Φ50 thickness is 1.0mm                                
Class 3---Φ28 thickness is 2.0mm,Φ50 thickness is 1.2mm                                
Class 4 ---Φ28 thickness is 2.5mm,Φ50 thickness is 1.5mm                                
2.Package                                
Poly Bag + Export Carton, Pallet if you need                                
3.Production Abality: 600,000 PCS/month                                
4.Certificate: SGS BIFMA X5.1,TUV DIN4550                                
Highlights:                                
•Reliable seal performance                                
•Defect rate of less than 3‰                                
•Smooth and noiseless stroke                                
•Reliable product quality    
http://www.ntgasspring.com/