... operation; 3.OEM service; 4.Warranty:2 years. Office Chair Polyurethane Foam Injection Machine Features 1.Low pressure PU ... bicycle cushions,car cushions, seat cushion, back cushion, chair cushion, sofa cushion, headrest, mattress, massage cushion sponge, ... chairs show photo2Factory strength Office Chair Polyurethane Foam Injection Machine photos show 1Office Chair Polyurethane Foam Injection Machine ...