We innovate to perpetuate the great history of wine

Passionate about the art and culture of wine, aware of the urgency of environmental and societal challenges, and convinced that enlightened innovation must serve the common good, we want to use our know-how and strengths to serve the sustainable development of the wine sector.

We have long been committed to the environment and are now firmly engaged towards energy transition! Reducing our direct greenhouse gas emissions by half means participating at our own level in the international objectives to combat climate change, but it also means preparing for a world where energy will be increasingly scarce and expensive.

Caroline Forgues

CSR Manager

We aim to offer our customers both technically perfect products and the certainty of working with a responsible and committed supplier.

Our priority commitments

Would you like to recycle your corks?

Since 2019, Diam Bouchage has been a partner of the Comité Interprofessionnel du Vin de Champagne (CIVC) and the Epsyvin association for the collection and recycling of used corks in the Champagne-Ardenne region. In 2020, we provided our customers in the Champagne region with collection points for corks. The corks are then grouped together at our Cumières plant before being sent for recycling. A similar initiative has also been set up in Gironde with our partner Agir Cancer Gironde, in 2021.

A certified company

Our commitment to offering you the highest quality products and services


Diam closures are manufactured according to a strict set of checks and controls, based on laboratory analyses within a management system that draws Inspiration from the ISO 9001 standard.
Technical data-sheets for each product are available upon request.

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Food safety compliance

The factories manufacturing Diam closures are FSSC 22000 certified. They meet all HACCP hygiene requirements and standards.
Each component of Diam products meets all quality and food safety compliance standards in Europe and America (FDA).

Sécurité alimentaire


All our production sites in France, Spain and Portugal are ISO 14001 certified. This voluntary international standard aims to implement an Environmental Management System. It provides guarantees for controlling the environmental impact of a company.

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Certification FSSC 22000
ISO 14001