Regional and supply-chain research

Industrial Gases Air Separation Keyword Candidate Study

Industrial Gases Air Separation Keyword Candidate Study. A dated 31-record cohort study compares composition, parent sets and evidence coverage. Comparative structure study; archive date 2026-10-16.

Revision and archive snapshot: 2026-10-16

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Research findings

Comparative structure study

The largest recorded reporting jurisdiction, Jiangsu, contains 6 records (19.4% of this 31-record cohort). The remaining cohort contains 25 records. The comparison concerns archive composition.

The recorded industry label Advanced chemicals accounts for 29.0% here (9/31), compared with 1.4% in the parent set (269/19,297), an absolute gap of 27.6 percentage points.

15/31 companies link to pages with existing source-supported excerpts (48.4% of the cohort). The other 16 records remain usable for archive composition, but do not support new operating case studies.

1 keyword candidates match only a company name, with no matching term in recorded products or sub-industry fields. Product evidence is needed before treating these as operating businesses in this segment.

Company cohortDirectly linked pagesShare of public archiveArchive date
31310.2%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, All public archive records, contains 19,297 records. This cohort contributes 31 (0.2%); 19,266 records remain after excluding it.

CategoryCohort count/baseReference: All public archive recordsGap (pp)Representation ratioRest count/base
industry · Advanced chemicals9/31 · 29.0%269/19,297 · 1.4%+27.620.83260/19,266
chain role · Fine chemicals / Basic and process materials8/31 · 25.8%740/19,297 · 3.8%+22.06.73732/19,266
sub-industry · General-purpose fine chemicals7/31 · 22.6%199/19,297 · 1.0%+21.521.90192/19,266
chain role · Advanced equipment and industrial automation / Process equipment and inspection instruments11/31 · 35.5%4,085/19,297 · 21.2%+14.31.684,074/19,266
reporting jurisdiction · Jiangsu6/31 · 19.4%3,025/19,297 · 15.7%+3.71.233,019/19,266
industry · Advanced equipment8/31 · 25.8%4,918/19,297 · 25.5%+0.31.014,910/19,266

Ratio of label participation, not market share; multi-label counts overlap.

Excluding this cohort, the recorded industry label Advanced chemicals covers 260/19,266 remaining records (1.3%), an absolute gap of 27.7 percentage points from this cohort.

Concentration and cross-sectional structure

The full reporting jurisdiction distribution has 16 labels; the top 3 contain 12/31 records (38.7%).Other known labels contain 19 records.

For 31 records with known labels, the effective category count is 11.0, versus 16 actual labels. Definitions and scope are in the methodology.

The table shows ten labels; 6 others are included in the calculations above.

Recorded labelRecordsShare of cohort
Jiangsu619.4%
Sichuan39.7%
Anhui39.7%
Zhejiang39.7%
Shanghai26.5%
Guangdong26.5%
Henan26.5%
Shenzhen26.5%
Beijing13.2%
Shandong13.2%

Record counts do not rank supply capability or economic size.

The largest intersection, Jiangsu × Advanced chemicals, contains 2 records, or 33.3% of the 6 records carrying the Jiangsu label.

reporting jurisdictionindustryIntersection recordsCohort share
JiangsuAdvanced chemicals26.5%
ShenzhenAdvanced chemicals26.5%
ShanghaiEnergy conservation and environmental protection13.2%
ShanghaiAdvanced chemicals13.2%
BeijingAdvanced equipment13.2%
SichuanNew energy and power equipment13.2%
SichuanBiomedicine13.2%
SichuanAdvanced equipment13.2%

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 29 non-empty cells; the other 21 remain in the analysis.

Evidence coverage and strength of conclusions

Record fieldNon-empty/cohortCompletion
Company name31/31100.0%
reporting jurisdiction31/31100.0%
industry31/31100.0%
Recorded products31/31100.0%
sub-industry31/31100.0%
Chain labels31/31100.0%

Non-empty fields are not necessarily accurate or supported by originals.

Scope of source supportCount
Profiles with source-supported excerpts15
Distinct corresponding companies15
Reviewed Chinese/English paragraph pairs15

Counts concern existing reviewed bilingual excerpts, not re-certification of originals or entire reports.

Transparent rule reminderRecordsCohort share
Contains registration-narrative wording13.2%

A rule hit prioritises review; it does not establish that the entire field is wrong. One record can trigger several rules.

Matched fieldCandidatesCohort share
Company name825.8%
Recorded products3096.8%
Sub-industry13.2%

An ID may match several fields, so counts may exceed the cohort total. Matches establish search relevance only.

Among the translated non-broad query terms, “industrial gases” has the most matches: 17/31. Name, product and sub-industry fields match 0, 17 and 1 records respectively; the largest field is product field. Fields can overlap, and a term remains a search link rather than verified business activity.

Selected query termCandidates/shareName matchesProduct fieldSub-industry
industrial gases17 · 54.8%0171

Selected broad terms and specific segment terms, not the full query. Terms and fields can overlap and must not be summed. Counts show lexical sensitivity; no records are removed without primary evidence.

1 candidates match only a name, or lose all product-field matches after the full company name is removed while sub-industry also has no hit. This transparent string test locates copied company descriptions; it does not establish that a company does not operate the business.

Intersection with 2026 local lists

8 of this cohort’s 31 records link through existing company-ID mappings to 2026 lists from all jurisdictions (25.8%). This intersection measures list linkage, not successful recognition or company growth.

Observation setList recordsNew-applicant recordsReview recordsMapped company IDs
National list records linked to this cohort’s IDs8088

List rows and company IDs are separate counts, not new firms or final recognition.

Stored 2026 local-recommendation records, sources and stage definitions

Recorded roles and delivery checks

Delivery framework, stages and original sources

Related studies and shared records

Shared records with Electronic Special Gas Keyword Candidate Study: 17; records in this cohort but outside that set: 14. The intersection/union ratio is 38.6%, a measure of label overlap rather than business collaboration. Read comparison

Shared records with Industrial Gas Compressor Vacuum Pumps Keyword Candidate Study: 22; records in this cohort but outside that set: 9. The intersection/union ratio is 21.0%, a measure of label overlap rather than business collaboration. Read comparison

Company samples and record links

CompanyJurisdictionRecorded industry
Weihai Berlin Voncon Oxygen Technology Co., Ltd.ShandongEnergy conservation and environmental protection
Kaifeng Huanghe AIR Separation Group Co., Ltd.HenanAdvanced equipment
Zhejiang Zhengda Air Separation Equipment Co., Ltd.ZhejiangBiomedicine
Suzhou Xinglu Air Separation Plant Science and Technology Development Co., Ltd.JiangsuBiomedicine
Guangzhou Steel Gas (Shenzhen) Co., Ltd.ShenzhenAdvanced chemicals
Shanghai Suishan Industrial Co., Ltd.ShanghaiEnergy conservation and environmental protection
Suzhou Oxygen Plant Co., Ltd.JiangsuAdvanced equipment
Zhongke Fuhai Technology Co., Ltd.BeijingAdvanced equipment

Stable-ID samples, not rankings; metrics use the full cohort.

Directly related profiles and reports

Methodology

Read ID deduplication, comparison, batch and evidence definitions