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Research findings
Filter-difference study
Against the 18-record Adhesive Tape Protective Film Display Materials Keyword Candidate Study, this 15-record cohort shares 14 records. Only 1 occur here and 4 only in the reference; the union contains 19. These are filter-membership differences, not company entries or exits.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 15 | 15 | 0.1% | 2026-10-16 |
Deduplicated company IDs.
Filter differences and comparison link
The largest recorded sub-industry participation gap is for Adhesive tapes and functional adhesive-film materials: 1/15 here versus 0/18 in the reference, an absolute difference of 6.7 percentage points. The cohorts have overlapping company IDs and are not independent samples.
| sub-industry | Focal count/base | Reference count/base | Participation gap (pp) |
|---|---|---|---|
| Adhesive tapes and functional adhesive-film materials | 1/15 | 0/18 | +6.7 |
| OLED display materials | 0/15 | 1/18 | -5.6 |
| APIs / pharmaceutical intermediates and display materials | 0/15 | 1/18 | -5.6 |
| Electronic and functional materials | 0/15 | 1/18 | -5.6 |
| Electronic-paper displays and new display materials | 0/15 | 1/18 | -5.6 |
Zero means no recorded label, not no business; multi-label cells overlap.
Counts within parent sets
| Set | All records | This subset | Excluding this subset |
|---|---|---|---|
| All public archive records | 19,297 | 15 | 19,282 |
Observed labels
| Dimension | Label | Count/base | Participation |
|---|---|---|---|
| reporting jurisdiction | Shanghai | 2/15 | 13.3% |
| reporting jurisdiction | Guangdong | 2/15 | 13.3% |
| reporting jurisdiction | Jiangsu | 2/15 | 13.3% |
| reporting jurisdiction | Shenzhen | 2/15 | 13.3% |
| reporting jurisdiction | Xiamen | 1/15 | 6.7% |
| industry | Advanced materials | 8/15 | 53.3% |
| industry | Advanced chemicals | 5/15 | 33.3% |
| industry | New-energy vehicles | 1/15 | 6.7% |
| industry | Advanced equipment | 1/15 | 6.7% |
Multi-label counts can overlap; filter compliance is not industrial advantage.
Evidence and list-linkage counts
| Measure | Count |
|---|---|
| Companies with existing sourced excerpts | 7/15 |
| Existing reviewed bilingual excerpt pairs | 7 |
| IDs linked to 2026 local lists | 3/15 |
Existing excerpts do not certify entire old reports; list linkage is not final recognition. Full definitions are on the series page.
How candidates match
| Field | Matches/candidates |
|---|---|
| Name | 4/15 |
| Product field | 10/15 |
| Sub-industry | 2/15 |
Fields can overlap; hits establish search relevance only.
Recorded roles and delivery checks
Related studies and shared records
| Comparison study | Reference records | Shared IDs | Focal only | Intersection/union |
|---|---|---|---|---|
| Adhesive Tape Protective Film Display Materials Keyword Candidate Study | 18 | 14 | 1 | 73.7% |
| Protective Film Functional Film Keyword Candidate Study | 73 | 8 | 7 | 10.0% |
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Guangzhou Xinqiang Automotive Components Co., Ltd. | Guangdong | New-energy vehicles |
| Shushi Group Co., Ltd. | Hubei | Advanced materials |
| Anhui ZHONGYI Rubber Belts Co., Ltd. | Anhui | Advanced chemicals |
| Dalian HUAHAN Rubber & Plastic Machinery Co., Ltd. | Dalian | Advanced equipment |
| Huizhou Xinya Kaili Technology Co., Ltd. | Guangdong | Advanced materials |
| BaoDing Huayue Rubber Belts Co., Ltd. | Hebei | Advanced chemicals |
| Shanghai Radix Vacuum Metallising Co., Ltd. | Shanghai | Advanced materials |
| ShenZhen Innovation Meticulous Glass Co., Ltd. | Shenzhen | Advanced materials |
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Guangzhou Xinqiang Automotive Components Co., Ltd. | Company data profile |
| Shushi Group Co., Ltd. | Company data profile |
| Anhui ZHONGYI Rubber Belts Co., Ltd. | Company report page |
| Dalian HUAHAN Rubber & Plastic Machinery Co., Ltd. | Company data profile |
| Huizhou Xinya Kaili Technology Co., Ltd. | Company report page |
| BaoDing Huayue Rubber Belts Co., Ltd. | Company data profile |