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Research findings
Filter-difference study
Against the 30-record Precision Optics Lens Modules Keyword Candidate Study, this 23-record cohort shares 22 records. Only 1 occur here and 8 only in the reference; the union contains 31. These are filter-membership differences, not company entries or exits.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 23 | 23 | 0.1% | 2026-10-16 |
Deduplicated company IDs.
Filter differences and comparison link
The largest recorded sub-industry participation gap is for Precision optical components and fibre-optic devices: 7/23 here versus 7/30 in the reference, an absolute difference of 7.1 percentage points. The cohorts have overlapping company IDs and are not independent samples.
| sub-industry | Focal count/base | Reference count/base | Participation gap (pp) |
|---|---|---|---|
| Precision optical components and fibre-optic devices | 7/23 | 7/30 | +7.1 |
| In vitro diagnostics | 1/23 | 0/30 | +4.3 |
| Optical communications and laser devices | 4/23 | 4/30 | +4.1 |
| Sensors and sensing components | 0/23 | 1/30 | -3.3 |
| Industrial software and information services | 0/23 | 1/30 | -3.3 |
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 | 23 | 19,274 |
Observed labels
| Dimension | Label | Count/base | Participation |
|---|---|---|---|
| reporting jurisdiction | Shenzhen | 5/23 | 21.7% |
| reporting jurisdiction | Zhejiang | 3/23 | 13.0% |
| reporting jurisdiction | Shanghai | 2/23 | 8.7% |
| reporting jurisdiction | Sichuan | 2/23 | 8.7% |
| reporting jurisdiction | Fujian | 2/23 | 8.7% |
| industry | Next-generation information technology | 18/23 | 78.3% |
| industry | Advanced materials | 2/23 | 8.7% |
| industry | Producer services | 1/23 | 4.3% |
| industry | Biomedicine | 1/23 | 4.3% |
| industry | Advanced equipment | 1/23 | 4.3% |
Multi-label counts can overlap; filter compliance is not industrial advantage.
Evidence and list-linkage counts
| Measure | Count |
|---|---|
| Companies with existing sourced excerpts | 12/23 |
| Existing reviewed bilingual excerpt pairs | 15 |
| IDs linked to 2026 local lists | 8/23 |
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 | 1/23 |
| Product field | 13/23 |
| Sub-industry | 13/23 |
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 |
|---|---|---|---|---|
| Precision Optics Lens Modules Keyword Candidate Study | 30 | 22 | 1 | 71.0% |
| Specialty Optical Fiber Fiber Laser Devices Keyword Candidate Study | 27 | 7 | 16 | 16.3% |
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Jiaxing Zmax Optech Co., Ltd. | Zhejiang | Next-generation information technology |
| Chengdu Guangming Optical Elements Co., Ltd. | Sichuan | Next-generation information technology |
| XiangHang(Shanghai)Technology Co.,Ltd. | Shanghai | Next-generation information technology |
| Optowide Technologies Co., Ltd. | Fujian | Next-generation information technology |
| Beijing Trans Manufacture and Trade Co., Ltd. | Beijing | Next-generation information technology |
| Fujian Forecam Optics Co., Ltd. | Fujian | Next-generation information technology |
| Shenzhen Agilebull Technology Co., Ltd. | Shenzhen | Advanced equipment |
| Zhuhai Guangheng Technology Co., Ltd. | Guangdong | Next-generation information technology |
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Jiaxing Zmax Optech Co., Ltd. | Company report page |
| Chengdu Guangming Optical Elements Co., Ltd. | Company report page |
| XiangHang(Shanghai)Technology Co.,Ltd. | Company data profile |
| Optowide Technologies Co., Ltd. | Company data profile |
| Beijing Trans Manufacture and Trade Co., Ltd. | Company report page |
| Fujian Forecam Optics Co., Ltd. | Company data profile |