End-to-end silicone expertise

Expertise that takes shape

Key facts

Facts that convince

    Employees worldwide

    Customers worldwide

    Customised products

    Production area

Philosophy

Our standard is world market level

Our products are rarely visible – but often crucial. Whether in a wiring harness, oven door or medical device: BIW stands for technical precision, reliability and series production capability. As a development partner, we deliver quality at world market level every day – with genuine customer service, fast implementation and honest engineering.

Appreciated by our partners
BIW in sport

Commitment that connects

BIW is proud to be an official partner of EN Baskets Schwelm. What connects us? Commitment, precision, team spirit – values that are just as important in high-performance sport as they are in industrial series production. With our regional sponsorship, we strengthen young talent, promote top performers and fly the flag for the location.

History

Our milestones

1971
1975
1987
1990
ab 1998
2014
2015
2017
2020
2021
Foundation of BIW

BIW was founded as the successor to Bochumer Isolierstoff-Werke and began producing silicone extrudates in Schwelm.

New building

New building in Schwelm on the B7 with continuous expansion.

Relocation

Relocation to Ennepetal in the Oelkinghausen industrial estate with 45 employees.

1. generation change

Generational change in company management.

Extension

Over 20 years of continuous expansion of the main site in Ennepetal.

Foundation in China

Foundation of BIW Insulation and sealing technology (Kunshan) co. ltd. in China.

Foundation in Poland

Founding of BIW Polska, Wroclaw (Breslau) in Poland and opening of the assembly plant in Ennepetal.

2. generation change

Generation change, from 2nd to 3rd generation in the family business.

Move BSP

Relocation of the sister company BSP to Iserlohn.

Chlorine-free production

Development of chlorine-free production. BIW is a pioneer in the silicone industry with the conversion of its production.

The company

Responsibility begins with production

Energy and environment

Certified environmentally conscious, out of conviction

BIW pursues a comprehensive environmental and energy programme and fully complies with the requirements of ISO 14001 and ISO 50001. The company switched to chlorine-free crosslinkers at an early stage and is aiming for CO₂ neutrality (Scope 1 & 2) by 2030. BIW is also involved regionally and reports transparently on sustainability and CSR.

CSR

Responsibility that creates trust

BIW stands for responsible corporate behaviour along the entire value chain. Integrity, transparency and fairness in our dealings with customers, suppliers and partners are central components of our corporate practice. BIW creates trust and stability in the industrial environment through high quality standards, reliable processes and long-term partnerships.

Local social responsibility

Social responsibility starts at your own doorstep

BIW is actively committed to the people and initiatives in the region around the Ennepetal site. The company supports social institutions, educational projects, sports clubs and charitable campaigns – with donations in kind, expertise and personal commitment. BIW sees itself as part of the community and takes responsibility for a strong, liveable environment.

Local social responsibility

We strengthen where we work

As an employer and industrial partner in the region, we are actively committed to the common good – with sponsorships, school co-operations and direct support for local initiatives. BIW is part of Ennepetal – and takes responsibility locally.

Career

Precision needs people

Become part of a development partner where material expertise is not a laboratory term, but daily practice.