... . absorb foreign advanced technology and produce hydraulic excavator independently which covering small and medium-sized excavators, and the large ... tons to 23.5 tons, including more than 10 models which are JV65, JV70, JV75, JV150, JV235 and so on. ... wear-resistant alloy steel plate.Carefully designed structure,rotating platform,frame and working devices are having good mechanical features.Improve ...