Qingdao Hongzhu Agricultural Machinery Co.,Ltd is the largest potato machinery manufacturer in China. Founded in 1999, Hongzhu company has been registered with capital of 50 million CNY, and has established scientific research and production base.

The major machines of Hongzhu Company cover more than 80 varieties in 5 series, including the potato planter, potato soil-hill machine, potato straw crusher, potato harvester, sweet potato ridger, possessing 18 China Invention Patents.