Mkono wa mwamba wa Kaiyuan uliowekwa kwenye Sumitomo 480 Excavator hukuruhusu kuchimba mwamba kwa urahisi na udongo na mkono wake wenye nguvu wa Kaiyuanzhichuang.
Kaiyuan Rock Arm, as a multi-purpose modified arm, is suitable for mining without blasting, such as open-pit coal mines, aluminum mines, phosphate mines, sand gold mines, quartz mines, etc. It is also suitable for rock excavation encountered in basic construction such as road construction and basement excavation, such as hard clay, weathered rock, shale, rock, soft limestone, sandstone, etc. It has Athari nzuri, nguvu ya vifaa vya juu, kiwango cha chini cha kushindwa, ufanisi mkubwa wa nishati ikilinganishwa na nyundo za kuvunja, na kelele za chini. Mkono wa mwamba ni chaguo la kwanza kwa vifaa bila hali ya mlipuko.