... welding machines 3. PVC PET box creasing machine Our high frequency synchronal welding and cutting technology is in the ... welding machine or fusing machine. We are able to manufacture high frequency machines according to your requirments.PVC PET High frequency plastic ... PS, PC, PET, APET, PETG and GAG), blister packaging (double blister welding, blister and card welding), leather, stamp, logo, writing ...