Hebei hanwu cotton machinery co., ltd, established in 1984, has been manufacturing cotton saw since 1997. the saw industry chain of hanwu shows unique advantages. the saws are used for cotton gin machine, delinter machine, and cleaner machine. its teeth point evenly, flatness = 0.3mm, hardness of ginning saw: hrc35-45, hardness of delinting saw and cleaner saw: hrc30-40.