Dear Sir, We required Double head welding machine for pvc film welding in below specification. Please send us brand name , weight, buyer in Pakistan, rate cnf Karachi, Power output: 1000W Quantity:2 sets Welding Area: 50cm 2 FULLAREA Oscillation Frequency: 30MHZ�5MHZ Length of press: 480mm Area of plate electrode: 500x250mm DIMENSION:118X95X98cm Double Head Item:H.F plastic welding machine Power output: 2500W Quantity:1 sets Oscillation Frequency: 27.12MHZ�0.6%MHZ Oscillation tube:6T51 Rectifier:Silicon Rectifier Maximum Press pressure:300kgs Lower electrode: 455x890mm DIMENSION:160X122X130cm Double Head thanks