Environmental Membrane Water Treatment Keyword Candidate Study

Filter-difference study

Against the 93-record Membrane Separation Filtration Keyword Candidate Study, this 79-record cohort shares 77 records. Only 2 occur here and 16 only in the reference; the union contains 95. 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 Filtration materials and filter elements: 0/79 here versus 8/93 in the reference, an absolute difference of 8.6 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.

Formulation assessment depends on use and consistency evidence

The Functional film materials label covers 34 records (43.0% of this cohort). This archive clue raises a verification question about Use-specific functional formulations with application-test documents; it does not establish that these companies already deliver it.

Shared records with Membrane Separation Filtration Keyword Candidate Study: 77; records in this cohort but outside that set: 2. The intersection/union ratio is 81.1%, a measure of label overlap rather than business collaboration. Read comparison

Shared records with Specialty Paper Functional Film Keyword Candidate Study: 44; records in this cohort but outside that set: 35. The intersection/union ratio is 48.9%, a measure of label overlap rather than business collaboration. Read comparison