... machine parts. Specification of JY-YB-41. Pneumatic planter/corn drill,multi-purpose,for corn,soybean, ... by replaced seed suction disc. JY-YB-4 is mainly used in sowing corn and bean ... and so on, by changing the transmission radio.4. Use good seeds, whose germination rate should be ... consistent.Main technical parameter 4 planting rows, corn seed drill,corn planter,precision pneumatic planter,corn seeder ...