PHI thinks ahead.

For solutions that work in everyday life.

because we understand what you really need.

We speak the Language of window manufacturers, system providers and processors, because we ourselves come from the trades and understand the demands of the industry from my own experience know. We have been developing for many years Plastic solutions for window and door technology – practical, system-oriented and with a clear view of what really matters in everyday life.

PHI stands for technical competence, reliable quality and products that not only impress on paper, but also on the construction site, in manufacturing, and beyond. many years In use. Our strength lies in understanding the interrelationships: between profile system, assembly process, material selection and cost-effectiveness.

As Partners accompany We serve our customers holistically – from from the initial idea through development to a production-ready solutionShort decision-making processes, in-house production, and personal contacts ensure that solutions are developed quickly and implemented reliably. This is how we offer more than just accessories: We create relief, security, and quality you can depend on in the long term.

We think in terms of solutions – not standard products.

We consistently develop plastic components from the application context – precisely tailored to your profile system and optimized for assembly, function and cost-effectiveness.

Quality begins with the workmanship.

High-quality materials, controlled processes and decades of practical experience ensure that our products function reliably over the long term.

Sustainability with substance

Sustainability is not an add-on for us, but an integral part of production – implemented in a resource-saving manner, without compromising on performance or precision.

Personal. Tangible. Fast.

We focus on genuine partnership: short communication channels, dedicated contacts, and solutions that are developed jointly and implemented quickly.

One goal. One team.
A morning.

As a responsible, medium-sized manufacturer, we see it as our duty to create not just products, but opportunities – for our employees, our customers, and the planet. Our vision, mission, and values guide us in this endeavor. They are not just a slogan, but a lived reality – every single day, for everyone on the team.

Our vision

Sustainable window technology for a livable future

We believe in a construction industry that is durable, energy-efficient, and resource-conserving – and where every component counts. Our vision is to actively contribute to greater sustainability with window accessories made from recycled plastic.

We focus on innovation, partnership and consistent quality – Made in Germany.

Our mission

We develop technology that makes a difference.

Our mission is to develop window solutions that stand the test of practice, with technical depth, industry understanding and user focus.

We stand for:

Practical product development
User-friendly window solutions
Individual consultation for window manufacturers
High build quality & time savings during assembly

We support our customers in a spirit of partnership – from the initial idea to series production.

Our values

The foundation of our work – committed, vibrant, authentic.

competence

We know the industry, the materials, the challenges. Our strength lies in sound plastics engineering for the window industry – coupled with the ambition to improve a little bit every day.

#PHIfamily

We see ourselves as a team – across departments and hierarchies. Loyalty, trust, and mutual support characterize our collaboration. This applies both internally and in our partnerships with customers and suppliers.

creativity

We don't think in terms of standard solutions, but in terms of possibilities. Our inventive spirit is reflected in 75 patents and in products that bring genuine everyday convenience. At PHI, creativity means: thinking openly and implementing precisely.

integrity

Reliability, honesty, and responsibility are non-negotiable for us. We act transparently – in customer relationships as well as in business decisions. Every word counts with us.

Our vision gives us direction. Our mission gives us focus. Our values give us our stance. This is how we have worked for over 30 years – and we will continue to do so in the future.

Reliable. On equal terms.

#partnership

Partnership isn't just a buzzword for us, it's a way of working. We develop, advise, and manufacture hand in hand with our customers – from the initial concept to series production. We collaborate with 700 customers and partners worldwide on a long-term, collaborative, and equal footing. Our commitment: to listen, to think proactively, and to take responsibility. Working shoulder to shoulder, we create solutions that are technically compelling and have a lasting impact – for our partners and for future generations.

#practical

We focus on what truly works – technically, economically, and ecologically. Sustainability must be feasible in series production. Therefore, we consistently consider materials, processes, and components from the perspective of their application. With 5,000 product variants and a production volume of 1.5 million parts per year, we know how sustainable plastic solutions can hold their own in everyday industrial use – reliably, reproducibly, and scalably.

#competent

For us, competence means leveraging experience and taking responsibility. For 50 years, we have been developing and manufacturing sophisticated industrial components made of plastic and metal – including laser processing. As a market-leading company in sustainable plastics technology, we are committed to the circular economy and already process 90% regranulate. 75 patents demonstrate our innovative strength, and continuous learning secures our competitive edge. This results in solutions that are both technologically advanced and sustainable.

Careers at PHI – Technology with heart and team spirit

Do you want to do more than just work, do you want to make a difference? At PHI, you'll find true team players, flat hierarchies, and an environment where your contribution matters. Start your future in the window and door manufacturing industry now – together we create more than just products.

Become part of the #PHIfamily

Career

Work where technology, team spirit and appreciation belong together.
Become part of the PHI family

Working at PHI

Story

Our path to becoming the hidden champion of the window industry – discover our roots and development.

Our milestones

sustainability

Regranulate, our own mill and green electricity – this is how we shape plastics technology responsibly.

Sustainability at PHI