求翻译：4.12.1批准后的MDA及相关的申请书、技术文件、有关产品证明文件、参考资料、重要传真信函、适航批件、以及授权许可书等由质量部存档。是什么意思？

4.12.1 approval of the mda and related applications, technical documentation, documents, reference materials, it is important fax letter, airworthiness approval documents, and license books archived by the Quality Department.

After the approval of the 4.12 .1 MDA and related applications, technical papers, relevant product documentation, reference information, important fax letters, airworthiness approval from, as well as licensing and the quality of archive.

After 4.12.1 authorized MDA and correlation requisition, technical document, related product proof document, reference, important facsimile correspondence, seaworthiness written directive from a superior, as well as authorized licence and so on by quality department archive.

4.12.1 the approval of MDA and its related applications, technical papers, product documentation, reference materials, important fax letter, airworthiness approval documents, archiving and licensing by the quality Department.