AMETEK Rotron’s AC and Brushless DC Fans and Blowers and Cooling Systems have successfully supported some of the most stringent Military and Aerospace vehicles, programs and installations for over 60 years. Our products are specifically designed to operate in harsh environments, while delivering effective, efficient and highly reliable cooling solutions. With over 25 product families, a high degree of vertical integration and core competancies in the design and manufacture of aerodynamics, electromechanical assemblies, motor drives and liquid vapor cycle cooling systems, we offer the widest product range in the world, with thousands of P/N’s active and available today. At the same time, we specialize in working with our customers to create unique product configurations to address the specific cooling requirement – not only for the cooling capability, but space claim, weight, noise, power draw and system controls.​

Yen Sun Technology Corporation was established in 1987, conformity with the business philosophies of INNOVATION, QUALITY and EFFICIENCY.
With over 1000 employees, Yen Sun is a publicly-traded company in Taiwan comprised of two major divisions, including the Electronics Cooling Division and the Home Appliances Division. The manufacturing plants are located in Taiwan, Dongguan, and Shanghai with the worldwide service facilities throughout Asia, America, Australia and the greater part of Europe.
In the past decade, the Electronic Cooling Division has accumulated hundreds of patents all over the world and successfully established a reputation of consistent quality and unique capabilities with its well-known brand name Y.S. TECH.​

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