Makina athunthu a Trolley B / W ultrasound ndi kapangidwe katsopano, kudzera mwaukadaulo wokonza bwino komanso zida zapamwamba kwambiri, ntchito ya Trolley B / W urtrapend mpaka muyezo wapamwamba. Ndife opanda chilichonse mwatsatanetsatane wa Trolley Trolley B / W ultrasound , dzidalitseni mulingo wamtengo wapatali, kuti akubweretsereni bwino za malonda. Wopezedwa waluso wa China kwathunthu Trolley B / W Ultrasound ndi Spelley B / W ultrasound ndi mtengo wotsika, funsani US Tsopano!