I.Cov ntawv thov:
Lub tshuab kuaj tawv nqaij flexure siv rau kev kuaj flexion ntawm khau tawv sab saud thiab tawv nyias
(tawv sab saud khau, tawv hnab tes, tawv hnab, thiab lwm yam) thiab daim ntaub tais rov qab thiab tawm.
II.Txoj cai sim
Qhov yooj ywm ntawm daim tawv nqaij yog hais txog qhov khoov ntawm ib sab kawg ntawm daim ntawv sim ua sab hauv
thiab lwm qhov kawg ntawm qhov chaw sab nraud, tshwj xeeb tshaj yog ob qhov kawg ntawm daim ntawv xeem tau teeb tsa rau ntawm
qhov khoom siv sim uas tsim los, ib qho ntawm cov khoom siv tau kho, lwm qhov khoom siv tau rov qab los khoov qhov
daim ntawv xeem, kom txog rau thaum daim ntawv xeem puas lawm, sau tus lej ntawm kev khoov, lossis tom qab tus lej tshwj xeeb
ntawm kev khoov. Saib qhov puas tsuaj.
III.Ua tau raws li tus qauv
BS-3144, JIB-K6545, QB1873, QB2288, QB2703, GB16799-2008, QB/T2706-2005 thiab lwm yam
cov qauv tshuaj xyuas tawv nqaij uas yuav tsum tau ua.
