Kev nyab xeeb thiab kev ruaj ntseg yog qhov tseem ceeb tshaj plaws hauv lub ntiaj teb niaj hnub no.Txawm hais tias nyob hauv ib qho chaw pej xeem, chaw ua haujlwm, lossis lwm qhov chaw, muaj kev sib txuas lus txhim khu kev qha yog qhov tseem ceeb los xyuas kom muaj kev noj qab haus huv ntawm tus kheej.Ningbo Joiwo Hoobkas nyob hauv Yuyao City, Zhejiang Province, lees paub qhov kev xav tau no thiab muab kev nyab xeeb thiab kev nyab xeeb.xov tooj kev ruaj ntsegkev sib txuas lus daws teeb meem.Cov tshuab zoo no yog tsim los ntawmelevator xov toojqhov system,xov tooj huv chavqhov system,xov tooj banksystem, tsev kho mob xov tooj system, intercom xov tooj system, thiab lwm yam.