1. Look at the appearance. Although the purchase of an organic fertilizer equipment mainly depends on the price comparison, the appearance is also very important. Beautiful shape is attractive, people will stop to see. Therefore, the shape design should be able to meet the aesthetic point of view of consumers.2, look at the equipment safety. Buy organic fertilizer equipment must think of safety issues, safety issues can not be ignored! Organic fertilizer production lines must be designed with safety devices.3, look at the machine configuration. When purchasing, carefully check whether the bolts in each part are tightened. Whether there is a missing bolt phenomenon, the best choice for the roller transfer shaft is the universal coupling, because of its compact structure, flexible operation, and more convenient disassembly!