Cork Supply achieves B Corp certification
Harv 81 Group, owner of Cork Supply, Tonnellerie Ô and Studio Labels, has secured B Corp status. The business achieved a score of 89.3 points, above the 80-point B-Corp certification threshold.

B Corp certification, awarded by the non-profit network B Lab, is awarded to companies meeting high standards of verified performance, accountability, and transparency on factors ranging from employee benefits and charitable giving to supply chain practices and input materials.
Wine cork manufacturer Cork Supply has secured B Corp status for its parent company Harv 81 Group, named after the year founder and president Jochen Michalski set up Cork Supply as a one-man importer of corks to northern California.
“Our purpose has always gone beyond just business alone. We see sustainability as a duty to our teams, communities and the planet – creating long-term value for everyone,” said Michalski. “This certification is a recognition of the values that have shaped our group since its founding.”
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The group produces corks, Talis spirits closures, Tonnellerie Ô barrels, Creative Oak alternatives and Legnokaps wooden capsules.
Harv 81 Group, formerly The Cork Supply Group, has been importing corks into the US market for more than 40 years.
Rui Pedro Silva, sustainability director for Harv 81 Group, said of the company’s latest achievement: “Many of our standards were already aligned with B Corp principles because of our long-standing sustainability strategy and quality systems, but we strengthened documentation, improved data tracking, and formalised several policies to meet the rigorous verification requirements.”
He added: “Rather than change who we are, the process helped us structure what we were already doing well, identify new opportunities for improvement and have more visibility of everything we are doing.”
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