Muab qhov chaw cia rau kev kawm pub dawb dumbbells hauv kev cob qhia hla, 2-Tier qhov chaw rau 10 khub ntawm 20 dumbbells nrog tus qauv hnyav, thiab qhov chaw ntxiv rau sab saum toj tso cai rau kev khaws cov khoom siv xws li cov khoom siv dag zog, pob tshuaj, thiab lwm yam. Ua tsaug rau DHZ's cov khoom siv muaj zog thiab kev tsim khoom, cov qauv ntawm cov khoom siv tau ruaj khov thiab muaj tsib xyoos lav.