... ; 3.OEM service; 4.Warranty:2 years. Office Chair Polyurethane Foam Injection Machine Features 1.Low pressure PU machine ... polyurethane (filling, casting and injecting) with two or three components;7.The original liquid circulation in entire machine uses oil ... foam: bicycle cushions,car cushions, seat cushion, back cushion, chair cushion, sofa cushion, headrest, mattress, massage cushion sponge, toys ...