I cannot write this description based on the website text provided. The text appears to be broken HTML code and navigation elements rather than coherent company information. While it mentions "Emerald brand" and references sustainable products, disposables, and packaging supplies, the content is too fragmented to reliably extract what United Supply Systems actually does or who they serve. To write an accurate description for a business referral directory, I would need clear, readable website text that explains their services and target market.