... blending, stubbing in the light soil, etc. The harrow has the advantages of reasonable structure, firmness and durability, ... company: [1] Our company Shandong Yucheng Ali Disc Harrow co,ltd, a private enterprise specializing in developing, ... Qingquan brand disc harrow, disc plow, mouldboard plow, rotary tiller, potato planting (harvest) machine, cultivator, subsoiler, seeder, leveler, ridger, trencher ...