Tianjin Hyrun Electronics Ltd,.Co established in 1998. Our company combines development,manufacture,sale,service.HF(high frequency) welding machines act as the leading of products. We have many technical engineers who have worked on HF welding machines for many years.Our HF welding machines have the following characteristics: Novel style, Production stable, Production speed.We have achieved three patents:1. Output Regulation and Display Device: patent No.20062015174519;2. Late-model Cavity Resonator: patent No.2005200271423; 3. Spark Defender: patent No.2005200265992