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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryIndustryGlass, Ceramics, Stone & Construction Materials IndustrySionProz Frères SA
Proz Frères SA Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Proz Frères SA manufactures concrete products and provides precast solutions for building, civil engineering and environmental or interior projects. The company supplies both standard items and custom prefabricated elements and operates production facilities to meet technical specifications.

AI-generated
Offering

Products & services

Industry:Glass, Ceramics, Stone & Construction Materials Industry
✓ Offered6
Custom precast concrete (civil engineering)
Architectural precast elements for civil engineering, in a wide range of textures, finishes and colours, up to elements weighing 12 tonnes.
Standard concrete products for building
Insulating and acoustic bricks, blocks and filter bricks, produced with an automatic block press, with bricks available from 6 to 23 cm.
Standard concrete products for civil engineering
Pipes, tubes, rings and cast-iron manholes for drainage, prepared according to the requirements of the project manager and ready for installation.
Standard concrete products for the environment
Paving blocks, parking grids, kerbstones and wall elements, produced with an automatic block press for outdoor landscaping.
Custom precast concrete (building)
Concrete products with specific features tailored to each requirement, with a high standard of finishing.
Custom precast concrete (environment and urban planning)
Urban amenities in concrete that contribute to the aesthetics of cities, with functional layouts to improve quality of life and comfort.
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4.0/5

Proz Frères SA

Trust & reputation

ranQ Trust Score of Proz Frères SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 100% · As of October 2026

Proz Frères SA scores 60.4 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.70.824%
  • 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.27.910%
  • 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%
Proz Frères SA scores 85.5 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.55.07%
Proz Frères SA 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%
Proz Frères SA scores 24.0 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 35.31.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.16.74%
Qualifications+0.00

Proz Frères SA reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

September 18, 2025Media
De Christian Constantin aux Proz Frères : 11 témoins racontent la légende de la Foire du Valais
lenouvelliste.ch

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Location

Rue de la Dixence 60
1950 Sion
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:15
Tue
07:00 - 12:00, 13:00 - 17:15
Wed
07:00 - 12:00, 13:00 - 17:15
Thu
07:00 - 12:00, 13:00 - 17:15
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.760.461
Founded
1959 · 67 years
Last commercial register change
May 13, 2025
Employees
1 to 10
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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