OSP PCB surface finish — inspection and release briefFINISH NOTE / REVISION1. Approved film chemistry2. Organic-film test method3. Packaging / open exposure4. Complete assembly sequenceOne controlled specification connectsdesign, fabrication, inspection andassembly.A photograph is product context. Adrawing states the requirement. Atraceable report supplies evidence.Do not substitute one for the other.Original engineering illustration · conceptual, not to scale