corn combine harvester: 4YW-2 (mount on tractor) advantage performance: Good command of snapping roll to prevent from jam and gain high rotate speed.Adaptation spaced 450-900 MMHigh efficiency with 0.27-0.53 hectare per hour and higher than similar products by 0.07-0.13 hectare per hour.Header ascend and descend uprightly with no alter of harvesting angle.Tractor as center to do free motion.Hydraulic control of ascend and descend to ensure convenient and agile operation main specifications: Model4YW-2Number of Rows2Distance between Rows450 -900mmHeight> 600mmWidth1400/ 1650mmProductivity0.27-0.4hec/hMatched Model50-70hStalk Cut Qualified Ratio≥90%Grain Broke Ratio≤2%Reliability95%