Stepper Tsav Counter Nta:Qhov tseeb thiab qhov tsis zoo feem pua: <0.3%Thicker ob chav thaiv hlau rooj plaub: 1.1 hliPeb tuaj yeem muab ob hom kev thim rov qab-thiab rov qab ua haujlwm ntawm cov khoomNrog bracket