onion is one of the major vegetables widely distributed in China.The main planting areas areShandong Province,Gansu Province,Inner Mongolia Municipality.The onion hao great nutritional value.Onion can kill th bacteria to make body kiip off diseases,Onion can stimulate peo;le in good appetite and are helpful for digesting foods,Onion contain the element of calcium that can make th ebone more healthy.Onion also can low people's blood pressure,and blood fat,Onion is specolly good for patient suffering from sugar Diabetes&Asthma,Onion ialxo contains the element of selenium that can make people keep out of can make people keep out of cancer.