1. N'elu PCB: OSP, HASL, Lead-free HASL, Immersion Tin, ENIG, Immersion Silver, Hard gold plating, Plating gold for all board, gold finger, ENEPIG… OSP: ọnụ ala, ezigbo solderability, ọnọdụ nchekwa siri ike, obere oge, teknụzụ gburugburu ebe obibi, ịgbado ọkụ dị mma, ezigbo… HASL: ọ na-abụkarị mu...
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