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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLausanneProval Sàrl
Proval Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Proval SARL is to provide consulting and trading services to the metal and petrochemical industries. Specifically, this includes: trading in complex materials such as concentrates, waste streams, secondary and primary metals; investments in pre-treatment and processing facilities; consulting services to solve complex problems and support turnaround projects; metallurgy and mining, including process and flow sheet modeling; and independent audits. The company provides access to highly qualified experts who can support customers in solving critical challenges and improving their operations.

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Offering

Products & services

Industry:Technical Consulting & Engineering
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4.0/5

Proval Sàrl

✓ Offered5
Trading
Trading in non ferrous metals, primary and secondary metals, scrap and waste; by-products and wastes such as copper slimes, catalysts and zinc-containing wastes; ores and concentrates.
Consultancy services
Consultancy services for complex problems and turnaround projects, with multi-disciplinary teams and support to improve metallurgical operations.
Metallurgy
Improvement analysis and proposal implementation, troubleshooting, debottlenecking and start-up assistance; project management, owner’s engineer, cost management, feasibility studies and technology risk review.
Process and Flowsheet Modelling
Plant mass and energy balances, flowsheet development, process optimization, pilot and demonstration plant data evaluation, feasibility studies, detailed process design and dynamic modelling.
Independent auditing
Technical evaluation, commercial organisation review, industry and SWOT analysis, financial and return on investment evaluation for operations or new projects.
Trust & reputation

ranQ Trust Score of Proval Sàrl: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 54% · As of October 2026

Proval Sàrl has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Proval Sàrl scores 72.3 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.75.012%
  • 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%
Proval Sàrl scores 83.3 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).83.322%
Proval Sàrl scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Proval Sàrl reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

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

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Location

Avenue de Tivoli 19 B
1007 Lausanne

At a glance

Legal form
Limited Liability Company
UID
CHE-355.514.416
Founded
2019 · 7 years
Last commercial register change
February 25, 2022
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.
88.0
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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