A certification on a product tells you about the product. These two tell you something about the company behind it, which is why PLEET uses them, alongside BPI and CMA certification for compostables, as the criteria for listing a supplier at all.
B Corp
B Corp certification is run by B Lab, a nonprofit. A company is assessed across governance, workers, community, environment and customers, must reach a minimum score, and is reassessed periodically. The assessment is about the company's practices as a whole, not about any particular product, so a B Corp can still sell things you would not buy. Among the foodware suppliers in this section, World Centric, Good Start Packaging and Eco-Products are certified, as are the reuse operators Bold Reuse, Friendlier and Returnr. Every certified company is listed in B Lab's public directory.
1% for the Planet
A simpler commitment: member companies give at least one percent of annual sales to environmental nonprofits, and the organisation verifies that they do. It says nothing about how the company makes its money, only that a fixed share of it goes to environmental work. World Centric is a member.
What the badges do not tell you
Neither certification checks whether a specific cup composts or whether a specific container will survive two hundred washes. For that, use BPI's catalogue, CMA's accepted list and the PR3 standards. The company badges are a reason to look at a supplier. The product certifications are the reason to buy.