1. Diameter of warm-up roller:600mm 800mm 900mm 1100mm available discretionarily. 2. Each surface of roller are treated with exactitude milling and plating rigid chrome, glabrous and durable. 3. Each layer warming-up range can be electromotion adjusted in monolayer. 4. Can be collocated in monolayer or multiple. 5. Expiry width:1400mm--2200mm