simple in structure,convenient in operation,high in working efficiency,precise in land-leveling,well in water-saving effect 1PJ-3.0/1PJ-4.0/1PJ-5.0 paddy field laser land-leveling machine is a new type machine which was jointly developed by South China Agricultural Untiversity and Zhongji Southern Machinery Co.,Ltd. The machine adopted the advanced laser control technology,equipped with the ...