1. Tshawb xyuas "Identity"
Koj tuaj yeem tshawb xyuas qhov sib xws los ntawm lub vev xaib official ntawm "China Fire Protection Products Information Network".
2. Tshawb xyuas daim ntawv lo
Puas muaj daim ntawv lo mus tas li hauv txoj haujlwm tseem ceeb uas muaj cov ntaub ntawv xws li lub npe, cov lus qhia tshwj xeeb, thiab cov chaw tsim khoom lub npe?
3. Txheeb xyuas qhov tshwm sim
Puas yog qhov zoo li ua tiav thiab tsis muaj kev puas tsuaj? Puas yog cov seams nruj? Puas yog lub qhov rooj kaw thiab qhov rooj sib txuas ua tiav thiab ua haujlwm zoo?
4. Tshawb xyuas lub sealing
Lub qhov rooj puas tuaj yeem kaw qhov kev ntseeg siab? Puas yog qhov hluav taws kub sealing sawb ncaj, tsis muaj arching lossis puas?
5. Mloog lub suab thaum tapping
Yog hais tias lub suab thaum tapping lub qhov rooj nplooj yog hollow, nws yog ib tug substandard khoom.
