Utilize online business directories such as Yellow Pages, Yelp, or Google Maps to search for upholstery or foam suppliers in your locality.Attend furniture trade shows or upholstery exhibitions. These events often bring together suppliers and distributors in the industry, providing an opportunity to connect with sofa foam distributors.Contact manufacturers that specialize in producing foam materials. They may have a list of distributors or be able to direct you to companies that distribute their products.Explore wholesale furniture suppliers, as they may carry sofa foam materials or be able to connect you with distributorsLook into online B2B marketplaces such as Alibaba, ThomasNet, or other platforms where you can find suppliers and distributors of industrial materials, including sofa foam.Reach out to professionals within the furniture industry, such as furniture manufacturers, upholsterers, or designers. They may have recommendations based on their experience.Check with industry associations or groups related to foam manufacturing or upholstery. They may have directories or resources that can help you find sofa foam distributors.Explore online retailers and e-commerce platforms that specialize in upholstery and furniture materials. Some distributors may have an online presence.