Metal Industry in
Wollerau

Tara Resources AG

Since 2018 · 21–50 empl.

The core activity of Tara Resources is the development and operation of mining projects, in particular the Brskovo mine in Montenegro, which will become one of the largest zinc mines in Europe.

Polytrop AG Metall-Schleiferei

Since 2019 · 11–20 empl.

The core activity of Polytrop AG is the processing of metallic surfaces through grinding, brushing, satining and polishing, both manually and with state-of-the-art machine technology. The company offers individual solutions for various industries such as pharmaceuticals, metal or medical technology, kitchen and facade construction, lighting, architecture and art.

HARBRU Stahl AG

Since 2011 · 1–10 empl.

The core activity of Harbru Stahl AG is the processing and distribution of steel and aluminum products, particularly in the form of coils, strips and sheets. The company offers various services, including: * Shape modification (rolling, annealing, dressing) * Longitudinal and transverse cutting * Rewinding and re-wrapping * Laser cutting * Surface treatment (galvanizing, aluminizing, etc.) The company positions itself as a coil expert and offers consulting and processing services for deliveries in steel and aluminum.

Sioro AG

Since 2021 · 11–20 empl.

Sioro AG manufactures precision turned and milled parts and produces complete assemblies, offering surface coatings, assembly and documented testing services. The company works with a wide range of materials (including Inconel, Hastelloy and pure nickel), maintains ISO 9001 quality management and uses metrology equipment such as a 3D coordinate measuring machine.

SIORO Swiss Technology AG

Since 2024 · 11–20 empl.

SIORO Swiss Technology AG manufactures high-precision turned and milled parts and delivers complete assemblies, including assembly and leakage/function testing. Services include surface treatments, processing of advanced alloys (e.g. Inconel, Hastelloy, pure nickel), warehousing/logistics and ISO 9001–based quality management for customers in medtech, connector, mobility and machine-building sectors.

HotMetall AG

Since 2009 · 1–10 empl.

Swiss Electrical Steel GmbH

Since 2017 · 1–10 empl.

Revolit GmbH

Since 2025 · 1–10 empl.