Hauv kev ua haujlwm PCBA, thaum qhov nro ntawm cov hlau raug puas tsuaj, nws yuav ua rau tsis zoo ntawm cov khoom siv saum npoo. Lub ntsiab manifestation ntawm tsis zoo wetting yog hais tias thaum lub sij hawm soldering txheej txheem, tsis muaj cov tshuaj tiv thaiv ntawm lub substrate ncoo thiab cov hlau tom qab lub solder yog infiltrated, uas ua rau tsis tshua muaj soldering los yog ploj lawm soldering.
BQC yuav nruj me ntsis tswj qhov zoo thaum lub sij hawm ua, nruj me ntsis tiv thaiv cov teeb meem zoo, thiab yuav nrhiav tau thiab nquag daws teeb meem nyob rau hauv lub sij hawm.
