Core Insights - Hudson Technologies Inc. (HDSN) is well-positioned in the refrigerant supply chain, focusing on reclaiming used refrigerants and selling them to wholesalers and end-users [1] Company Overview - HDSN operates in the refrigerant supply chain, emphasizing the reclamation of used refrigerants [1] - The company targets both wholesalers and end-users for its products [1] Investment Perspective - The company is considered a suitable fit for Berkshire's investment portfolio due to its strategic positioning and potential for sustained profitability [1] - The focus on strong margins, stable and expanding free cash flow, and high returns on invested capital is highlighted as a reliable driver of returns [1]