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Research findings
Cohort structure analysis
Recorded reporting jurisdiction counts in this 15-record cohort: Jiangsu (6 records); Zhejiang (2 records).
The record-count gap between Jiangsu and Zhejiang is 4, or 26.7% of this 15-record base. The gap concerns records, not revenue or market position.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 15 | 15 | 0.1% | 2026-10-16 |
Deduplicated company IDs.
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 | Jiangsu | 6/15 | 40.0% |
| reporting jurisdiction | Zhejiang | 2/15 | 13.3% |
| reporting jurisdiction | Hubei | 2/15 | 13.3% |
| reporting jurisdiction | Liaoning | 2/15 | 13.3% |
| reporting jurisdiction | Shanghai | 1/15 | 6.7% |
| industry | Advanced materials | 15/15 | 100.0% |
Multi-label counts can overlap; filter compliance is not industrial advantage.
Evidence and list-linkage counts
| Measure | Count |
|---|---|
| Companies with existing sourced excerpts | 9/15 |
| Existing reviewed bilingual excerpt pairs | 10 |
| IDs linked to 2026 local lists | 4/15 |
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 | 12/15 |
| Sub-industry | 0/15 |
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 |
|---|---|---|---|---|
| Quartz Silicon Carbide Semiconductor Consumables Keyword Candidate Study | 14 | 11 | 4 | 61.1% |
| Semiconductor Ceramic Quartz Consumables Keyword Candidate Study | 74 | 15 | 0 | 20.3% |
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Jinzhou Youxin Quartz Technology Co., Ltd. | Liaoning | Advanced materials |
| Shanghai Qianghua Industrial Corporation | Shanghai | Advanced materials |
| CBMA Quzhou Kinglass Quartz Co., Ltd. | Zhejiang | Advanced materials |
| Ferrotec(Zhejiang)Quartz Technology Co., Ltd. | Zhejiang | Advanced materials |
| Jiangsu Hongwei Quartz Technology Co., Ltd. | Jiangsu | Advanced materials |
| Beijing KaiDe Quartz Co., Ltd. | Beijing | Advanced materials |
| Wuhan New Silicon Technology Qianjiang Co., Ltd. | Hubei | Advanced materials |
| Jiangsu Hongyang Quartz Products Co., Ltd. | Jiangsu | Advanced materials |
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Jinzhou Youxin Quartz Technology Co., Ltd. | Company data profile |
| Shanghai Qianghua Industrial Corporation | Company report page |
| CBMA Quzhou Kinglass Quartz Co., Ltd. | Company report page |
| Ferrotec(Zhejiang)Quartz Technology Co., Ltd. | Company data profile |
| Jiangsu Hongwei Quartz Technology Co., Ltd. | Company data profile |
| Beijing KaiDe Quartz Co., Ltd. | Company data profile |