Regional and supply-chain research

Protective Film Functional Film Keyword Candidate Study

Protective Film Functional Film Keyword Candidate Study. A dated 73-record cohort study compares composition, parent sets and evidence coverage. Comparative structure study; archive date 2026-10-16.

Revision and archive snapshot: 2026-10-16

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Research findings

Comparative structure study

The largest recorded reporting jurisdiction, Jiangsu, contains 11 records (15.1% of this 73-record cohort). The remaining cohort contains 62 records. The comparison concerns archive composition.

The recorded chain role label Advanced materials / Basic and process materials accounts for 89.0% here (65/73), compared with 14.8% in the parent set (2,854/19,297), an absolute gap of 74.3 percentage points.

29/73 companies link to pages with existing source-supported excerpts (39.7% of the cohort). The other 44 records remain usable for archive composition, but do not support new operating case studies.

3 keyword candidates match only a company name, with no matching term in recorded products or sub-industry fields. Product evidence is needed before treating these as operating businesses in this segment.

Company cohortDirectly linked pagesShare of public archiveArchive date
73730.4%2026-10-16

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

Comparable sets and compositional differences

The parent set, All public archive records, contains 19,297 records. This cohort contributes 73 (0.4%); 19,224 records remain after excluding it.

CategoryCohort count/baseReference: All public archive recordsGap (pp)Representation ratioRest count/base
chain role · Advanced materials / Basic and process materials65/73 · 89.0%2,854/19,297 · 14.8%+74.36.022,789/19,224
industry · Advanced materials61/73 · 83.6%3,381/19,297 · 17.5%+66.04.773,320/19,224
industry · Next-generation information technology8/73 · 11.0%5,226/19,297 · 27.1%-16.10.405,218/19,224
reporting jurisdiction · Shenzhen10/73 · 13.7%1,398/19,297 · 7.2%+6.51.891,388/19,224
reporting jurisdiction · Shanghai8/73 · 11.0%1,131/19,297 · 5.9%+5.11.871,123/19,224
reporting jurisdiction · Jiangxi5/73 · 6.8%346/19,297 · 1.8%+5.13.82341/19,224
reporting jurisdiction · Zhejiang9/73 · 12.3%1,840/19,297 · 9.5%+2.81.291,831/19,224

Ratio of label participation, not market share; multi-label counts overlap.

Excluding this cohort, the recorded chain role label Advanced materials / Basic and process materials covers 2,789/19,224 remaining records (14.5%), an absolute gap of 74.5 percentage points from this cohort.

Concentration and cross-sectional structure

The full reporting jurisdiction distribution has 20 labels; the top 3 contain 30/73 records (41.1%).Other known labels contain 43 records.

For 73 records with known labels, the effective category count is 11.2, versus 20 actual labels. Definitions and scope are in the methodology.

The table shows ten labels; 10 others are included in the calculations above.

Recorded labelRecordsShare of cohort
Jiangsu1115.1%
Shenzhen1013.7%
Zhejiang912.3%
Shanghai811.0%
Guangdong56.8%
Jiangxi56.8%
Sichuan45.5%
Hubei45.5%
Ningbo22.7%
Anhui22.7%

Record counts do not rank supply capability or economic size.

The largest intersection, Shenzhen × Advanced materials, contains 9 records, or 90.0% of the 10 records carrying the Shenzhen label.

reporting jurisdictionindustryIntersection recordsCohort share
ShenzhenAdvanced materials912.3%
JiangsuAdvanced materials811.0%
ZhejiangAdvanced materials811.0%
ShanghaiAdvanced materials79.6%
GuangdongAdvanced materials56.8%
JiangxiAdvanced materials45.5%
SichuanNext-generation information technology34.1%
HubeiAdvanced materials34.1%

A cell contains company IDs carrying both labels. It does not establish procurement, supply or investment relationships between firms. Multi-label cells may overlap.

This page displays 8 of the full cross-tab’s 29 non-empty cells; the other 21 remain in the analysis.

Evidence coverage and strength of conclusions

Record fieldNon-empty/cohortCompletion
Company name73/73100.0%
reporting jurisdiction73/73100.0%
industry73/73100.0%
Recorded products73/73100.0%
sub-industry73/73100.0%
Chain labels73/73100.0%

Non-empty fields are not necessarily accurate or supported by originals.

Scope of source supportCount
Profiles with source-supported excerpts29
Distinct corresponding companies29
Reviewed Chinese/English paragraph pairs30

Counts concern existing reviewed bilingual excerpts, not re-certification of originals or entire reports.

Transparent rule reminderRecordsCohort share
Only generic operations vocabulary remains22.7%

A rule hit prioritises review; it does not establish that the entire field is wrong. One record can trigger several rules.

Matched fieldCandidatesCohort share
Company name34.1%
Recorded products1824.7%
Sub-industry5778.1%

An ID may match several fields, so counts may exceed the cohort total. Matches establish search relevance only.

Among the translated non-broad query terms, “thin-film materials” has the most matches: 41/73. Name, product and sub-industry fields match 2, 1 and 38 records respectively; the largest field is sub-industry label. Fields can overlap, and a term remains a search link rather than verified business activity.

Selected query termCandidates/shareName matchesProduct fieldSub-industry
thin-film materials41 · 56.2%2138

Selected broad terms and specific segment terms, not the full query. Terms and fields can overlap and must not be summed. Counts show lexical sensitivity; no records are removed without primary evidence.

3 candidates match only a name, or lose all product-field matches after the full company name is removed while sub-industry also has no hit. This transparent string test locates copied company descriptions; it does not establish that a company does not operate the business.

Intersection with 2026 local lists

9 of this cohort’s 73 records link through existing company-ID mappings to 2026 lists from all jurisdictions (12.3%). This intersection measures list linkage, not successful recognition or company growth.

Observation setList recordsNew-applicant recordsReview recordsMapped company IDs
National list records linked to this cohort’s IDs9189

List rows and company IDs are separate counts, not new firms or final recognition.

Stored 2026 local-recommendation records, sources and stage definitions

Recorded roles and delivery checks

Formulation assessment depends on use and consistency evidence

The Functional film materials label covers 34 records (46.6% 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.

Delivery framework, stages and original sources

Related studies and shared records

Shared records with Specialty Paper Functional Film Keyword Candidate Study: 51; records in this cohort but outside that set: 22. The intersection/union ratio is 66.2%, a measure of label overlap rather than business collaboration. Read comparison

Shared records with Environmental Membrane Water Treatment Keyword Candidate Study: 47; records in this cohort but outside that set: 26. The intersection/union ratio is 44.8%, a measure of label overlap rather than business collaboration. Read comparison

Company samples and record links

CompanyJurisdictionRecorded industry
Changzhou Betterial Film Technologies Co., Ltd.JiangsuAdvanced materials
Lekai Optoelectronic Materials Co., Ltd.JiangsuNext-generation information technology
Guangdong Ospura Co., Ltd.GuangdongAdvanced materials
Shushi Group Co., Ltd.HubeiAdvanced materials
Jiangsu Thinkre Membrane Material Co., Ltd.JiangsuAdvanced materials
Huizhou Xinya Kaili Technology Co., Ltd.GuangdongAdvanced materials
Haian HO CHI Technology Co., Ltd.JiangsuAdvanced materials
Sichuan Zhongya Technology Co., Ltd.SichuanAdvanced materials

Stable-ID samples, not rankings; metrics use the full cohort.

Directly related profiles and reports

Methodology

Read ID deduplication, comparison, batch and evidence definitions