Pre-mRNA splicing is a process used by eukaryotic cells to generate messenger RNAs that can be translated into proteins. During splicing. the non-coding regions of the RNAs (introns) are removed from pre-mRNAs and the coding regions (exons) are joined together. resulting in mature mRNAs. https://www.roneverhart.com/Doorking-2108-080-eVolve-Smart-Video-Intercom-System/