... tea seed,saponin is a natural surfactant,it can dissolve in water to form a stable soapy ... as the main forms of environmentally friendly additives can be widely used in pesticides,fungicides,herbicides,meanwhile ... main basis for cleaning pond agent,on the one hand,can be used to clean ponds before shrimp ... the process of cultivation;on other hand,it can make the shrimp exuviate in the early time ...