Liu Yong's patent

1, Li, Chen Zhongjia,,, Lin Na.2011.6 The patent number of the seedbed solid fertilizer quantitative fertilizing machine is 2010136638. X China invention patent China National Intellectual Property Administration certificate number 7994365438. 2. Chen Zhongjia, Li, Zou Shangqing, Jiang Le,. The application date is 20 10.9.7, the authorization date is 20110.7.20, and the patent number of branch conveyor of shrub stubble leveler is ZL 20 1020565438.