DIY FM Radio Elektronik Kit einstellbare Frequenz 150Hz-20KHz Löten Praxis
ab 10,92 €
1、Using high-quality materials, transparent plastic shell, double-sided epoxy circuit board, simple operation, easy welding. 3, keep the iron head clean: iron head surface oxidation of a layer of black impurities to form a heat insulation layer, so that the iron head to lose the role of heating.
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