1. Different models. The models of Lingong 360f and Lingong 36opIUs excavators are different. 2. Different production dates. The production date of 36o is earlier than that of 36op I us. 3. Different styles. 36of is a four-wheel model with a small capacity of 0.9 cubic meters and 36oplus is a crawler model with a large capacity of 1.7 cubic meters. 4. Different performance and quality. The performance quality of 36of is inferior to that of 36op I us.