The 21 Groep company source record lists 68 employees. The visible 21 Groep management graph includes:
Marco Van Maaren
CEO 21 Groep
0
0
General
(36)
Annemarie Klarenbeek
Projectadministratie
0
0
IT
(3)
Frank Hendrickx
Calculator / Engineer Bij Protect 21 Bij 21 Groep
2
0
Related company intelligence for 21 Groep
1 same-industry peer
10 with employee estimates
9 with websites
10 with social profiles
4 peer evidence types
Peer evidence source coverage
4 source-backed evidence types support this related-company graph.
same-industry peers, employee benchmarks, website records, and social profiles
Same-industry peers
1 / 10
1 of 10 related companies shares this company's industry classification.
Employee benchmarks
10 / 10
10 of 10 related companies include employee estimates.
Website records
9 / 10
9 of 10 related companies include official website records.
Social profiles
10 / 10
10 of 10 related companies include company social profile signals.
Peer link quality filter
Multi-signal peer link set
10 related companies met the 2-signal peer-link threshold. Eligible peers average 3.9 source-backed signals.
10
eligible
0
filtered
3.9
avg signals
Peer comparison matrix
Limited peer comparison
Compares this company with related-company evidence across employee scale and peer graph evidence.
employee scale and peer graph evidence
Employee scale
Near peer median size
This company
68 employees
Related peers
18 median peer employees
4 related employee-estimated peers are higher and 6 are lower.
10 related companies with employee estimates
Peer graph evidence
Multi-signal peer benchmark evidence
This company
Benchmark-ready peer graph
Related peers
3 benchmark dimensions
Peer benchmark combines 10 related companies with peer graph strength, size benchmark, and size position. Underlying peer graph includes 4 evidence types: industry context, employee benchmarks, website records, social profiles.
industry context, employee benchmarks, website records, social profiles
Peer benchmark evidence
Multi-signal peer benchmark evidence
Peer benchmark combines 10 related companies with peer graph strength, size benchmark, and size position. Underlying peer graph includes 4 evidence types: industry context, employee benchmarks, website records, social profiles.
peer graph strength
size benchmark
size position
Peer position benchmark
Employee-scale peer position benchmark
Peer-position benchmark shows employee scale above 60% of 10 comparable related peers.
Directional peer-position evidence:
Peer-position evidence combines employee scale above 60% of 10 comparable related peers from related-company records.
Employee scale: 60%
Peer graph strength
Benchmark-ready peer graph
Related peer graph has industry context, employee benchmarks, website records, and social profiles across 10 related companies.
Peer median size
18 employees
Largest peer by size
SPIE Nederland
3.18K employees
21 Groep size signal
68 employees
Peer size comparison
4 larger · 6 smaller
Peer scale position
Near peer median size
4 related employee-estimated peers are higher and 6 are lower.
21 Groep people graph sample
-
John Verhulst
Projectleider Bij Inducon 21
Oudenbosch, North Brabant, Netherlands1 email signal across 1 non-official domain -
Michel De Ruijsscher
21 Groep
The Hague, South Holland, Netherlands1 email signal across 1 non-official domain -
Paul Kemp
Bedrijfsleider Protect 21 at 21 Groep (Elektra 21, Inducon 21, Protect 21 En Install 21)
Terneuzen, Zeeland, Netherlands2 email signals across 2 non-official domains -
Danny Van De Velde
Directeur Woningbouw / Utiliteit Bij 21 Groep (Elektra 21, Install 21, Ibz)
The Hague, South Holland, Netherlands1 email signal across 1 non-official domain
How AeroLeads builds company intelligence
Use source-backed company records
AeroLeads combines company source fields, workforce samples, email-pattern aggregates, and related-company records when those signals are available.
Show only available evidence
Blank source fields are omitted. Contact channels are summarized as signals, with raw email addresses and phone numbers masked on public pages.
Compare useful company context
Related company, market, workforce, technology, and management signals help turn a static company listing into a company intelligence page.
Contact research
AeroLeads intelligence
Review reachable contact coverage for 21 Groep
AeroLeads maps 4 visible contact signals for 21 Groep. Coverage is email-led contact coverage.