... as,biochemistry,biohegy engineering,teaching,micorbiology and so on.HY-4(A) Multi-purpose VibratorTypeNo.Working StyleVibration Range (mm) ... 270×240HY Vertical hulti-pirpose Vibrator HY Vertical hulti-pirpose Vibrator is a kind of kiochemistry instruments which can ... as,biochemistry,biohegy engineering,teaching,micorbiology and so on.HY-4(A) Multi-purpose VibratorTypeNo.Working StyleVibration Range (mm) ...