Before use, the users must read the usage manual, and then take the speculum, push the duckbill of speculum which is closed into the vagina slowly. Open the duckbill of speculum according to the demand, fix the nut of the speculum, then it can be used in checking and treatment gynecology disease. After all, loose the nut of the speculum, take the duckbill of speculum out of the vagina slowly.
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