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Research findings
Comparative structure study
The largest recorded reporting jurisdiction, Shandong, contains 11 records (25.0% of this 44-record cohort). The remaining cohort contains 33 records. The comparison concerns archive composition.
The recorded industry label Advanced materials accounts for 22.7% here (10/44), compared with 52.1% in the parent set (411/789), an absolute gap of 29.4 percentage points.
19/44 companies link to pages with existing source-supported excerpts (43.2% of the cohort). The other 25 records remain usable for archive composition, but do not support new operating case studies.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 44 | 44 | 0.2% | 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, Fine chemicals, contains 789 records. This cohort contributes 44 (5.6%); 745 records remain after excluding it.
The parent set, All public archive records, contains 19,297 records. This cohort contributes 44 (0.2%); 19,253 records remain after excluding it.
| Category | Cohort count/base | Reference: Fine chemicals | Gap (pp) | Representation ratio | Rest count/base |
|---|---|---|---|---|---|
| industry · Advanced materials | 10/44 · 22.7% | 411/789 · 52.1% | -29.4 | 0.44 | 401/745 |
| industry · Biomedicine | 12/44 · 27.3% | 35/789 · 4.4% | +22.8 | 6.15 | 23/745 |
| sub-industry · Advanced chemicals | 6/44 · 13.6% | 273/789 · 34.6% | -21.0 | 0.39 | 267/745 |
| industry · Advanced chemicals | 8/44 · 18.2% | 256/789 · 32.4% | -14.3 | 0.56 | 248/745 |
| reporting jurisdiction · Shandong | 11/44 · 25.0% | 107/789 · 13.6% | +11.4 | 1.84 | 96/745 |
| industry · Producer services | 7/44 · 15.9% | 45/789 · 5.7% | +10.2 | 2.79 | 38/745 |
| reporting jurisdiction · Hubei | 5/44 · 11.4% | 53/789 · 6.7% | +4.6 | 1.69 | 48/745 |
| reporting jurisdiction · Jiangsu | 7/44 · 15.9% | 99/789 · 12.5% | +3.4 | 1.27 | 92/745 |
Ratio of label participation, not market share; multi-label counts overlap.
Excluding this cohort, the recorded industry label Advanced materials covers 401/745 remaining records (53.8%), an absolute gap of 31.1 percentage points from this cohort.
Concentration and cross-sectional structure
The full reporting jurisdiction distribution has 15 labels; the top 3 contain 23/44 records (52.3%).Other known labels contain 21 records.
For 44 records with known labels, the effective category count is 7.9, versus 15 actual labels. Definitions and scope are in the methodology.
The table shows ten labels; 5 others are included in the calculations above.
| Recorded label | Records | Share of cohort |
|---|---|---|
| Shandong | 11 | 25.0% |
| Jiangsu | 7 | 15.9% |
| Hubei | 5 | 11.4% |
| Sichuan | 4 | 9.1% |
| Hebei | 4 | 9.1% |
| Shanghai | 2 | 4.5% |
| Ningbo | 2 | 4.5% |
| Zhejiang | 2 | 4.5% |
| Beijing | 1 | 2.3% |
| Tianjin | 1 | 2.3% |
Record counts do not rank supply capability or economic size.
The largest intersection, Shandong × Producer services, contains 3 records, or 27.3% of the 11 records carrying the Shandong label.
| reporting jurisdiction | industry | Intersection records | Cohort share |
|---|---|---|---|
| Shandong | Producer services | 3 | 6.8% |
| Jiangsu | Advanced materials | 3 | 6.8% |
| Jiangsu | Advanced chemicals | 3 | 6.8% |
| Shanghai | Biomedicine | 2 | 4.5% |
| Sichuan | Producer services | 2 | 4.5% |
| Shandong | Advanced materials | 2 | 4.5% |
| Shandong | Biomedicine | 2 | 4.5% |
| Shandong | Advanced chemicals | 2 | 4.5% |
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 32 non-empty cells; the other 24 remain in the analysis.
Evidence coverage and strength of conclusions
| Record field | Non-empty/cohort | Completion |
|---|---|---|
| Company name | 44/44 | 100.0% |
| reporting jurisdiction | 44/44 | 100.0% |
| industry | 44/44 | 100.0% |
| Recorded products | 44/44 | 100.0% |
| sub-industry | 44/44 | 100.0% |
| Chain labels | 44/44 | 100.0% |
Non-empty fields are not necessarily accurate or supported by originals.
| Scope of source support | Count |
|---|---|
| Profiles with source-supported excerpts | 19 |
| Distinct corresponding companies | 19 |
| Reviewed Chinese/English paragraph pairs | 19 |
Counts concern existing reviewed bilingual excerpts, not re-certification of originals or entire reports.
| Transparent rule reminder | Records | Cohort share |
|---|---|---|
| Contains registration-narrative wording | 3 | 6.8% |
A rule hit prioritises review; it does not establish that the entire field is wrong. One record can trigger several rules.
1 records have a documented classification-consistency question. Original counts remain 44; excluding these records leaves 43 in the sensitivity calculation. The study does not reclassify firms or treat label conflicts as operating changes.
Intersection with 2026 local lists
14 of this cohort’s 44 records link through existing company-ID mappings to 2026 lists from all jurisdictions (31.8%). This intersection measures list linkage, not successful recognition or company growth.
| Observation set | List records | New-applicant records | Review records | Mapped company IDs |
|---|---|---|---|---|
| National list records linked to this cohort’s IDs | 14 | 0 | 14 | 14 |
List rows and company IDs are separate counts, not new firms or final recognition.
Stored 2026 local-recommendation records, sources and stage definitionsRecorded roles and delivery checks
Related studies and shared records
Shared records with Oilfield Drilling Completion Tools Keyword Candidate Study: 5; records in this cohort but outside that set: 39. The intersection/union ratio is 6.3%, a measure of label overlap rather than business collaboration. Read comparison
Shared records with Oil Gas Petrochemical Equipment Keyword Candidate Study: 11; records in this cohort but outside that set: 33. The intersection/union ratio is 6.1%, a measure of label overlap rather than business collaboration. Read comparison
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Suzhou Doer Gas & Chemical Equipment Co., Ltd. | Jiangsu | Advanced materials |
| Shanghai Shenkai Petroleum Equipment Co., Ltd. | Shanghai | Biomedicine |
| Newway Petroleum Equipment (Suzhou) Co., Ltd. | Jiangsu | Biomedicine |
| Jianghan Machinery Research Institute Limited Company of CNPC | Hubei | Next-generation information technology |
| Wuhan East Petrochemical Heavy Equipment Co., Ltd. | Hubei | Advanced materials |
| Sichuan Ruidu Petroleum Engineering Technology Service Co., Ltd. | Sichuan | Producer services |
| Liaoning Jia Bao Petrochemical Equipment Co., Ltd. | Liaoning | Biomedicine |
| Jiangyin Jintong Petrochemical Equipment Co., Ltd. | Jiangsu | Advanced chemicals |
Stable-ID samples, not rankings; metrics use the full cohort.
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Suzhou Doer Gas & Chemical Equipment Co., Ltd. | Company data profile |
| Shanghai Shenkai Petroleum Equipment Co., Ltd. | Company data profile |
| Newway Petroleum Equipment (Suzhou) Co., Ltd. | Company data profile |
| Jianghan Machinery Research Institute Limited Company of CNPC | Company report page |
| Wuhan East Petrochemical Heavy Equipment Co., Ltd. | Company data profile |
| Sichuan Ruidu Petroleum Engineering Technology Service Co., Ltd. | Company report page |