View color: high-quality green beans skin was waxy, particles full, uniform, very few broken, no insects, no impurities. Poor green mung beans color bleak, uneven size of particles, fullness difference, broken more, there are insects, impurities and so on.

Smell the smell: catch a green mung beans, to the green beans Kazakhstan a hot air, and then immediately smell the smell. High quality mung bean has a normal scent, no other smell. Micro-odor or mildew and other abnormal smell of bad green mung beans.