PCB Substrate Ccl Materials Keyword Candidate Study

Filter-difference study

Against the 76-record PCB Electronic Circuits Keyword Candidate Study, this 72-record cohort shares 65 records. Only 7 occur here and 11 only in the reference; the union contains 83. These are filter-membership differences, not company entries or exits.

An ID-deduplicated archive snapshot, not the whole market, current recognition or operating results.

The largest recorded sub-industry participation gap is for Electronic and welding materials: 2/72 here versus 0/76 in the reference, an absolute difference of 2.8 percentage points. The cohorts have overlapping company IDs and are not independent samples.

Zero means no recorded label, not no business; multi-label cells overlap.

Multi-label counts can overlap; filter compliance is not industrial advantage.

Existing excerpts do not certify entire old reports; list linkage is not final recognition. Full definitions are on the series page.

Fields can overlap; hits establish search relevance only.

Component records require interface-level evidence

The PCBs and circuit boards label covers 2 records (2.8% of this cohort). This archive clue raises a verification question about Components or modules with application specifications; it does not establish that these companies already deliver it.

Shared records with PCB Electronic Circuits Keyword Candidate Study: 65; records in this cohort but outside that set: 7. The intersection/union ratio is 78.3%, a measure of label overlap rather than business collaboration. Read comparison

Shared records with PCBA Electronics Manufacturing Services Keyword Candidate Study: 16; records in this cohort but outside that set: 56. The intersection/union ratio is 16.3%, a measure of label overlap rather than business collaboration. Read comparison