Nta:
1. Peb-dimensional hloov kho, paub txog kev hloov kho nyob rau hauv 6 cov lus qhia: pem hauv ntej thiab nram qab, nce thiab nqis, sab laug thiab sab xis, kom qhov sib txawv ntawm lub qhov rooj nplooj thiab ncej yog zoo tagnrho.
2.Stainless steel khoom, muaj zog bearing muaj peev xwm
3.Qhov qhib siab tshaj 180 degrees