Cov laj thawj ntawm qhov tshwm sim yog:
1. Muaj teeb meem lossis qhib Circuit Court nyob rau hauv Circuit Court tiv tauj sab hauv.
2. Lub khawm yog hnav tawm.
Kev daws:
1. Muaj ib lub ammeter los kuaj qhov sib cuag ntawm cov circuits, thiab cov uas qhib circuits tau ncaj qha soldered los yog hloov.
2. Hloov nrog lub pob tshiab.
Yog tias cov xwm txheej saum toj no tsis tuaj yeem daws tau los ntawm cov neeg siv khoom lawv tus kheej, lawv tuaj yeem tiv tauj ncaj qha rau cov neeg tsim khoom tu cov neeg ua haujlwm ntawm Tehengwang Sales Co., Ltd.