Model SWT-850 series Tractor is in top position among the sme industry in china and its matched power is R4105T diesel engine which power is 85 hp. 95 hp .98hp . This tractor adopts fully hydraulic steering and hydraulic steering and hydraulic braking system .Its hydraulic suspension adopts catalogue "2",Tri-point ,synthetic draft snd postion control.Joggling sleeve is equipped for its gearing shifting.Independently opearted two stage clutch, reasonable shift gears(8 forward shifts and 2 reverse shift), two rev. PTO according with international standard,its whole suspended, independent and combined airproof cab and fixed tasks,but also for muddy fiedwork and engineerng tasks. Model SWT-854, SWT -984 as four wheel drive tractor is designed by installing a front drive axle on Model SWT-850. Its traction is improved on a large scale and is more suitable to mountain areas and muddy roads.