Diener Precision Pumps provides engineered pumps for customers in the high-tech fluids markets. At DPP, advanced engineering competence from California‘s high-tech center meets world famous precision manufacturing from Switzerland. Reputation for technical design excellence, fast prototyping, superior quality, and ongoing customer service are the reasons we are the preferred partner for your pump requirements. Outstanding design coupled with precision Swiss manufacturing makes the DPP Precision Gear and Metering pumps the most accurate, long life continuous flow pumps available on the market. DPP is certified to ISO 9001 and operates a clean room according to ISO Class 7. Proven customer satisfaction: More than 2.5 million pumps sold since the company was established Return ratio: far below 0.1 percent High customer loyalty: 90% of our customers have been purchasing with us for more than 15 years