Sanden Electronic Equipment Limited is a reliable manufacturer and distributor of high frequency and ultrasonic plastics welders based in Hong Kong. We specialize in the welding of various plastics. Different plastics with their unique melting point and resistant characteristics require different machines to do the welding job. Our major product lines are: 1. High frequency welding machines are mainly for PVC, PETG, PU and other PVC compound. Output power ranges from 2. 5kw to 40kw to suit ...