The explanation for herbal extraction:

                                                  

            


                          
1) According to the preparation characteristic of
the herbal soup, using water-extraction as
main way, adopted vapor distillation, warm
water circular extract, ultrasonic extract.

(2) For the definite content of resolvable in
organic solvent in pharmacology, to combine
with using methods of ethanol leakage,
flow-back, and supercritical CO2 extract in the
basic of water -extraction.