Welcome to SUMA, your provider for agitators and mixers; specifically designed for fermentation-gas plants (biogas) and liquid-manure tanks or lagoons. We've been delivering agitation solutions for nearly 60 years in the biogas, manure and waste water industry. Our knowledge and exclusive technology combined with our field-related expertise makes SUMA able to optimize and deliver custom solutions for your business. With SUMA, your results will be efficient liquid-manure management. SUMA is a private family firm that has no investors, shareholders or institutions to consider. We are the firm that can afford to make decisions with the customers' interests at heart worldwide.