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Research findings
Filter-difference study
Against the 14-record Industrial Gas Detectors Safety Monitoring Keyword Candidate Study, this 10-record cohort shares 9 records. Only 1 occur here and 5 only in the reference; the union contains 15. These are filter-membership differences, not company entries or exits.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 10 | 10 | 0.1% | 2026-10-16 |
Deduplicated company IDs.
Filter differences and comparison link
The largest recorded sub-industry participation gap is for Semiconductors and integrated circuits: 0/10 here versus 1/14 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) |
|---|---|---|---|
| Semiconductors and integrated circuits | 0/10 | 1/14 | -7.1 |
| Combustible and toxic gas detection and alarm equipment | 0/10 | 1/14 | -7.1 |
| New-energy equipment and systems | 0/10 | 1/14 | -7.1 |
| Instrumentation and testing equipment | 1/10 | 2/14 | -4.3 |
| Infrastructure engineering | 1/10 | 1/14 | +2.9 |
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 | 10 | 19,287 |
Observed labels
| Dimension | Label | Count/base | Participation |
|---|---|---|---|
| reporting jurisdiction | Zhejiang | 2/10 | 20.0% |
| reporting jurisdiction | Shenzhen | 2/10 | 20.0% |
| reporting jurisdiction | Hunan | 2/10 | 20.0% |
| reporting jurisdiction | Shanghai | 1/10 | 10.0% |
| reporting jurisdiction | Beijing | 1/10 | 10.0% |
| industry | Next-generation information technology | 6/10 | 60.0% |
| industry | Advanced equipment | 2/10 | 20.0% |
| industry | Biomedicine | 1/10 | 10.0% |
| industry | Energy conservation and environmental protection | 1/10 | 10.0% |
Multi-label counts can overlap; filter compliance is not industrial advantage.
Evidence and list-linkage counts
| Measure | Count |
|---|---|
| Companies with existing sourced excerpts | 2/10 |
| Existing reviewed bilingual excerpt pairs | 2 |
| IDs linked to 2026 local lists | 2/10 |
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 | 0/10 |
| Product field | 8/10 |
| Sub-industry | 2/10 |
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 |
|---|---|---|---|---|
| Industrial Gas Detectors Safety Monitoring Keyword Candidate Study | 14 | 9 | 1 | 60.0% |
| Industrial Safety Protection Monitoring Keyword Candidate Study | 29 | 9 | 1 | 30.0% |
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Kingmach Measurement and Monitoring Technology Co., Ltd. | Hunan | Advanced equipment |
| Beijing Blue Cloud Technology Co., Ltd. | Beijing | Next-generation information technology |
| Shenzhen Santachi Video Technology Co., Ltd. | Shenzhen | Next-generation information technology |
| China Railway Harbin Group of Technology Corporation | Heilongjiang | Advanced equipment |
| Hangzhou Ruhr Technology Co., Ltd. | Zhejiang | Next-generation information technology |
| Hunan Lianzhi Technology Co., Ltd. | Hunan | Next-generation information technology |
| AEGIS Industrial Safety Co., Ltd. | Shanghai | Biomedicine |
| Gosuncn Chuanglian Technology Co., Ltd. | Zhejiang | Next-generation information technology |
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Kingmach Measurement and Monitoring Technology Co., Ltd. | Company data profile |
| Beijing Blue Cloud Technology Co., Ltd. | Company data profile |
| Shenzhen Santachi Video Technology Co., Ltd. | Company data profile |
| China Railway Harbin Group of Technology Corporation | Company report page |
| Hangzhou Ruhr Technology Co., Ltd. | Company data profile |
| Hunan Lianzhi Technology Co., Ltd. | Company data profile |