Qalabkani wuxuu ku habboon yahay looxa-goynta ee guddiga PCB ka dib marka la xiro Shaqada;
U adeegso jarista xariijimaha iftiinka LED, ku habboon xariijin LED leh ballac ≥ 8mm iyo dhumucdiisu tahay 0.6mm-3.5mm oo leh V-groove