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Have you ever felt overwhelmed by these situations?Living in a rental with tiny space? A full-sized washing machine just won't fit!Need to wash intimate garments or baby clothes separately? Exhausted from hand-washing them every single day? Stop letting tedious hand-washing ruin your day!

Founded in 1995, Ningbo Keyi Electric Co., Ltd. is located in Cixi, Ningbo, Zhejiang—a renowned manufacturing hub for home appliances in China. After decades of steady development and accumulation, the company now boasts a modern manufacturing facility covering 40,000 square meters.

In many regions plagued by unstable power grids, soaring electricity bills, or a strong push for green energy, traditional AC-only air coolers are rapidly losing their competitive edge. As a specialized manufacturer of DC appliances, KOYER brings you a cutting-edge market solution—the AC/DC Evaporative Air Cooler.

In daily life, the more frequently electrical appliances are used, the higher the power consumption and the subsequent electricity bills. Power saving has become a public focus nowadays. It is not only for cutting electricity expenses, but also for reducing energy consumption, protecting the ecological environment, and safeguarding our shared home — the Earth.

As living standards rise, we have increasingly higher demands for quality of life, and keeping our clothes and footwear spotlessly clean has become a top priority. Our large-capacity shoe washing machine delivers a brand-new cleaning experience for you.

​This article explains in detail how a Switch Control AC DC Air Cooler Fan works, why it is becoming a preferred cooling solution in modern homes and industrial environments, and how it solves common problems such as high energy consumption, unstable power supply, and inefficient airflow control.