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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction managerHaldensteinGrischa Tech AG
Grischa Tech AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grischa Tech AG provides services for the expansion of telecommunications network infrastructure. Its activities include fibre-optic projects, cable laying and installation, and the extension and modification of existing networks.

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Service area

Offering

Products & services

Industry:Construction managerNetwork construction
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Grischa Tech AG

✓ Offered6
Fibre-optic projects
Fibre-optic new connections for residential, commercial and infrastructure buildings, expansion of existing networks, and migrations and conversions during live operation.
Cable pulling and installation
Cable pulling and installation work in new and existing infrastructure, interregional cable routing, and dismantling for fibre-optic and copper cables.
Trench and conduit rehabilitation
Renewal, replacement and maintenance of trenches and conduit routes using modern methods to improve capacity, operational reliability and service life.
Internet setup service
Advice, planning and setup of internet, Wi‑Fi and end devices, including Wi‑Fi extensions, router placement, configuration and on-site commissioning.
Construction and project consulting
Advice, cost estimation, planning and control of construction and infrastructure projects with schedule, cost and quality monitoring.
Project mandates
Project management, site supervision, and schedule and quality management for construction projects from execution through handover.
Trust & reputation

ranQ Trust Score of Grischa Tech AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

Grischa Tech AG scores 72.1 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.77.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.61.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Grischa Tech AG scores 80.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.79.212%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Grischa Tech AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Grischa Tech AG scores 0.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grischa Tech AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 out of 5 stars from 10 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.810
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Hanfrosa 1
7023 Haldenstein
Opening hours
Mon
07:30 - 11:45, 13:30 - 17:30
Tue
07:30 - 11:45, 13:30 - 17:30
Wed
07:30 - 11:45, 13:30 - 17:30
Thu
07:30 - 11:45, 13:30 - 17:30
Fri
07:30 - 11:45, 13:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-390.782.826
Founded
2018 · 8 years
Last commercial register change
January 21, 2021
Employees
11 to 20

Active in 1 of 26 cantons

  • GRGrisons
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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