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Research findings
Filter-difference study
Against the 48-record Insulation Thermal Barrier Materials Keyword Candidate Study, this 43-record cohort shares 42 records. Only 1 occur here and 6 only in the reference; the union contains 49. These are filter-membership differences, not company entries or exits.
| Company cohort | Directly linked pages | Share of public archive | Archive date |
|---|---|---|---|
| 43 | 43 | 0.2% | 2026-10-16 |
An ID-deduplicated archive snapshot, not the whole market, current recognition or operating results.
Filter differences and comparison link
The largest recorded sub-industry participation gap is for Refractory and thermal-insulation materials: 31/43 here versus 31/48 in the reference, an absolute difference of 7.5 percentage points. The cohorts have overlapping company IDs and are not independent samples.
| sub-industry | Focal count/base | Reference count/base | Participation gap (pp) |
|---|---|---|---|
| Refractory and thermal-insulation materials | 31/43 | 31/48 | +7.5 |
| Functional powders and porous materials | 0/43 | 2/48 | -4.2 |
| Functional materials and advanced-material platforms | 3/43 | 5/48 | -3.4 |
| Modified plastics / engineering plastics | 0/43 | 1/48 | -2.1 |
| Refrigeration and thermal-management equipment | 1/43 | 1/48 | +0.2 |
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 | 43 | 19,254 |
Observed labels
| Dimension | Label | Count/base | Participation |
|---|---|---|---|
| reporting jurisdiction | Henan | 12/43 | 27.9% |
| reporting jurisdiction | Jiangsu | 7/43 | 16.3% |
| reporting jurisdiction | Shandong | 4/43 | 9.3% |
| reporting jurisdiction | Hebei | 3/43 | 7.0% |
| reporting jurisdiction | Zhejiang | 3/43 | 7.0% |
| industry | Advanced materials | 34/43 | 79.1% |
| industry | Next-generation information technology | 3/43 | 7.0% |
| industry | Advanced chemicals | 2/43 | 4.7% |
| industry | New energy and power equipment | 1/43 | 2.3% |
| industry | New-energy vehicles | 1/43 | 2.3% |
Multi-label counts can overlap; filter compliance is not industrial advantage.
Evidence and list-linkage counts
| Measure | Count |
|---|---|
| Companies with existing sourced excerpts | 22/43 |
| Existing reviewed bilingual excerpt pairs | 23 |
| IDs linked to 2026 local lists | 5/43 |
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 | 1/43 |
| Product field | 12/43 |
| Sub-industry | 31/43 |
Fields can overlap; hits establish search relevance only.
Recorded roles and delivery checks
Traditional materials require product and manufacturing checks
The Building materials label covers 1 records (2.3% of this cohort). This archive clue raises a verification question about Defined building products or production equipment with quality documents; it does not establish that these companies already deliver it.
Delivery framework, stages and original sourcesRelated studies and shared records
Shared records with Insulation Thermal Barrier Materials Keyword Candidate Study: 42; records in this cohort but outside that set: 1. The intersection/union ratio is 85.7%, a measure of label overlap rather than business collaboration. Read comparison
Shared records with Aerogel Insulation Materials Keyword Candidate Study: 36; records in this cohort but outside that set: 7. The intersection/union ratio is 73.5%, a measure of label overlap rather than business collaboration. Read comparison
Company samples and record links
| Company | Jurisdiction | Recorded industry |
|---|---|---|
| Gongyi Tongda Zhongyuan REFRACTORY MATERIALS Co., Ltd. | Henan | Producer services |
| Hunan Xianggang Yixing Refractory Materials Co., Ltd. | Hunan | Advanced materials |
| Shanxi Yu County Xixiaoping Refractory Materials Co., Ltd. | Shanxi | Advanced materials |
| Henan HONGDA Furnace Industrial Co., Ltd. | Henan | Advanced materials |
| Shandong Yongan Adhesive Industry Co., Ltd. | Shandong | Advanced chemicals |
| Jiangsu Baoyirui New Materials Co., Ltd. | Jiangsu | Advanced materials |
| Changchun HP Pelzer Automotive Interior Systems Co., Ltd. | Jilin | New-energy vehicles |
| Henan Zhongyuan SPECIAL REFRACTORY Material Co., Ltd. | Henan | Advanced materials |
Directly related profiles and reports
| Page | Presentation |
|---|---|
| Gongyi Tongda Zhongyuan REFRACTORY MATERIALS Co., Ltd. | Company report page |
| Hunan Xianggang Yixing Refractory Materials Co., Ltd. | Company data profile |
| Shanxi Yu County Xixiaoping Refractory Materials Co., Ltd. | Company data profile |
| Henan HONGDA Furnace Industrial Co., Ltd. | Company data profile |
| Shandong Yongan Adhesive Industry Co., Ltd. | Company data profile |
| Jiangsu Baoyirui New Materials Co., Ltd. | Company data profile |