An authorization letter for HEC is a legal document which gives permission to a third person to go and attest the degrees and transcripts on your behalf. Duly filled-in Application Form and Challan Form or Courier Receipts in case attestation is applied through courier service.Your Name's CNIC number. You have to show your attested documents from Board and HEC. If you start it from now, it will save your time and money at the time of visa process. Labor Day – no day or evening classes. This is issued with the approval of the Competent Authority. We sell our products both fully integrated into complete vehicles and in kit form to other business partners for integration in the same vehicle platforms.