EFD20 220v 110v 24v 12v 100KHz High Frequency Transformers Doorbell Transformer

We have ER series, EE series, EFD series, EQ series, PQ series, POT series transformers, they are used for switching power supply,main power transformer. We have qualitative products as well as professional sales and technical team, so we are able to provide customers with good products, excellent technical support and perfect after-sales service.

RUIYUAN was established in 2002, located in Tianjin City,the second largest port city in China.We have been focusing on different kinds of high quality wires: enameled round copper wire, rectangular enameled copper triple insulated wire, silk covered Litz wire, bonding wire and special enameled wire for 21 years.Ruiyuan is one of the pioneers in producing micro thin enameled wires below 0.03mm in China. Our R & D team has 20 years of market experience. In 2019, our finest diameter is 0.011mm, and mass production has been achieved. All of our products are UL, RoHS certified, in line with industry standards IEC60317, JIS C 3202, NEMA, NW82.