Making people's lives better

An overview of all the CSR-related things we do. They show how a concerted focus on CSR benefit both the company and the communities in which we operate. We believe deeply in this potential of shared value for all our stakeholders, whether they are employees, suppliers, clients, governments, shareholders, partners, local communities, or society as a whole.

ZDHC membership

We're a member of ZDHC, Zero Discharge of Hazardous Chemicals.

REACH compliant

We're REACH compliant. REACH is the European Community Regulation on chemicals and their safe use. It deals with the Registration, Evaluation, Authorisation and Restriction of Chemical substances.

ADF membership

We're a member of ADF, the Association des Arboristes de France. The manager of our SIP-Protection brand is co-founder, treasurer and partner.

Geotextiles with Francesco Fontana

Interview with Francesco Fontana of Manifattura Fontana about geosynthetics and his role as president in the IGS.

IGS membership

Through Manifattura Fontana, our brand that produces geotextiles, we're member of IGS, the International Geosynthetics Society.


Mullion is a member of the British Safety Industry Federation (BSIF).

Art at heart

Sioen actively contributes to art and culture and stimulates and supports artists all over the world. One of the more reknown projects was The Gates of the world famous artist Christo in New York.

Wrap Gold

Sioen's Semarang plant in Indonesia is WRAP Gold certified.

Open Apparel Registry

Sioen apparel production facilities are listed in the OAR, the Open Apparel registry.

SA8000 equivalent

Sioen holds several similar/ comparable credentials to the SA 8000 that show our commitment to all our employees. The STeP certificate covers the fields the SA8000 sets out.

Valipac membership

We're a member of Valipac


Sioen en TensiNet have a successful partnership

Team Humber membership

We're member of Team Humber Marine Alliance


We're a partner of IMS E.V


We partnered up with TreesAreGood

VOKA membership

Sioen is a member of VOKA, the Flemish network of enterprises

LSAA membership

Sioen is a member of the Lightweight Structures Association of Australia.