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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryIndustryPlastics manufacturerStein Am RheinFostag Formenbau AG
Fostag Formenbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Fostag Formenbau AG develops, designs and manufactures injection moulds for thermoplastics. Its services also include consulting, mould testing, training and support, with applications including medical, diagnostic and pharmaceutical products.

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Offering

Products & services

Industry:Plastics manufacturer
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4.2/5

Fostag Formenbau AG

✓ Offered10
High-performance injection moulds
High-performance injection moulds for complex and demanding projects, developed and produced for medical, diagnostics, pharma and special applications.
Planning, consulting, design
Planning, consulting and design of injection moulds, focusing on functionality, cost efficiency and technical solutions tailored to requirements.
Injection mould production
Production of injection moulds with a modern machine park, highly qualified employees, quality inspection and maintenance-friendly high-performance moulds.
Acceptance, training, service
Acceptance of tools, customer training for handling and maintenance, as well as commissioning, qualification and ongoing service in the technical facility and on customer site.
Core centering systems (InMedio)
Core centering systems to eliminate core shift and deflection, with interchangeable cavities and adjustable compensation for cubic and rotationally symmetrical products.
Hot runner systems for PVC
Hot runner systems for processing PVC with easy cleaning, savings in raw material, short cycle times and minimal residence times.
Hot runner systems for COC/COP
Hot runner systems for processing COC/COP with flawless sprue quality, reduced injection pressures and without material scorching.
Multi-component injection moulding tools
Multi-component injection moulding tools for multi-colour and multi-component processing, as well as overmoulded insert parts, also with space-saving Core-Back technology.
Co-injection hot runner
Co-injection hot runner for multi-layer and barrier layers as well as material sandwiches, with a ring-gate nozzle system and a compact design.
Needle shut-off system (Angusta)
Needle shut-off system for the smallest cavity gaps, designed for runnerless production, reduced cycle times and series production.
Trust & reputation

ranQ Trust Score of Fostag Formenbau AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of November 2026

Fostag Formenbau AG scores 69.4 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.68.124%
  • 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.72.110%
  • 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%
Fostag Formenbau AG scores 89.3 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.100.012%
  • 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%
Fostag Formenbau AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).85.022%
Fostag Formenbau AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Fostag Formenbau AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 16 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
4.4
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.416
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Kaltenbacherstrasse 28
8260 Stein Am Rhein
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.521.584
Founded
1988 · 38 years
Last commercial register change
July 17, 2024
Employees
11 to 20
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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