Oil drum cover 2600w ultrasonic plastic welding machine Jan 29, 2017 Cover, Cover Machine, Machine, Email/Skype: carriegong66@163.com Whatsapp/Tel: 0086 13620006372. Like 0 Thanks! You've already liked this « ultrasonic multi-heads welding machine » Plastic Tank Cover Cap Welding Machine with Ultrasonic Welding Machine