Dynomill Inc. is a service-based corporation based in South El Monte, California, specializing in precision machining, resonance testing, dynamic balancing, and spin testing. The company focuses on manufacturing turbo expanders and compressors impellers in their 10,000 square foot facility, accommodating part sizes up to 30" in diameter for machining and 120 pounds for spin testing. Their services include precision machining, dynamic balancing, resonance and spin testing, and thorough inspection of parts before delivery. Founded in 2003 by former Rotoflow employees, Dynomill has been providing precision machining services to customers in the Southern California region.