OSP is the abbreviation for Natural and organic Solderability Preservatives, often called bare copper, Entek. simply put, OSP is really an natural and organic pores and skin movie that grows chemically on a clear bare copper floor. This movie is immune to oxidation, thermal shock and humidity and protects the https://hdi-pcb-for-electronic-pr82604.dreamyblogs.com/31400525/5-essential-elements-for-20-layer-ic-industrial-control-test-substrate