Peev Xwm: Kwv yees li ntawm 500 ~ 600kgs / teev (raws li 5g mono xim)
3g x 35 strokes/feeb x 20 cavitiesx4 pwm x 60 feeb = 504kgs/teev
txog lub peev xwm peb tsis yog tsuas yog muaj cov kab loj xwb, kuj muaj cov kab me me rau kev ua tau raws li cov neeg siv khoom sib txawv.



















































































































