... PUYANG adopt international famous brands engines,Such as ,Cummins,Lovol/Perkins,Doosan ,Deutz and etc .They are 4 stroke , high torque ... level65db to 85db @ 7m (soundproof type)Engine brandCummins,Deutz, Lovol/perkins,doosan , detuz, weichai, shangchai etcEngine typeWater cooling, 4 stroke, direct ...