Since 1946, L. KLEIN SA has been shaping the story of Swiss precision craftsmanship. As a third-generation family business, we are deeply rooted in Biel/Bienne while keeping a clear focus on the future. Our strength lies in this balance: preserving proven values while boldly embracing new paths. That’s the essence of our guiding principle: “We’re simply different.”

Sustainability as a way of life

Long before “green business” became a trend, we took responsibility. Our company building tells that story: constructed from wood, designed for efficient rainwater usage, and powered by solar energy. For us, sustainability is not a marketing slogan, but a lived, daily commitment – to nature and to the generations of tomorrow.

You can feel how deeply this principle is embedded in our corporate culture through every interaction with us. Our philosophy and the blog post “The Sustainability Cycle” offer deeper insights into this holistic approach.

People make the difference

Behind every flawless piece of metal stands a team of people with passion, expertise, and dedication. Around 20 employees shape L. KLEIN SA with their unique strengths – from the seasoned insights of long-standing colleagues to the fresh perspectives of the next generation.

We foster a culture of appreciation built on trust – both internally and with our customers. Many of our business relationships have lasted decades, evolving into true partnerships at eye level – across sectors such as automotive, electronics, dental technology, and watchmaking. Together, we develop solutions that truly make a difference.

Locally rooted – globally connected

Closeness is a key quality principle for us – one that works on multiple levels. With strong roots in Biel/Bienne and a global outlook, we serve clients in over 40 countries with personal attention. Our multilingual consulting – in German, French, English, and Italian – creates genuine human connections, regardless of distance.

This sense of closeness also defines how we handle materials – which we know and understand down to the finest detail. Our transparent inventory system ensures complete traceability from source to final product. You’ll always know exactly where your material comes from and how perfectly it meets your requirements. It’s this blend of personal connection and metallurgical precision that builds the trust from which long-term partnerships grow.

Over 4,000 items in more than 50 material grades – each a promise of the highest precision. We specialise in fine gradations, smallest dimensions, and round cross-sections with customised intermediate sizes. This uncompromising attention to detail is what defines us.

Let’s talk

Do you have a specific project in mind? Or would you simply like to learn more about our approach and philosophy? Get in touch – we look forward to meeting you and redefining precision together.