1. Ua ntej siv lub clamp, xyuas seb qib ntawm lub hinged ib feem yog deformed lossis tawg.
2. Txheeb xyuas tas li thiab ua kom cov roj thiab cov pins ntawm qhov tig ntawm qhov clamp.Yog tias muaj qhov xoob loj, hnav, hloov pauv, thiab lwm yam, nws yuav tsum tau kho lossis hloov sijhawm.
3. Cov clampthat uas tau muab tso rau hauv kev siv tshiab yuav tsum tau ntsuas qhov ntsuas, thiab lawv tuaj yeem siv tau tsuas yog tom qab dhau qhov kev tshuaj xyuas.
