Nucleic acid custom synthesis is a highly specialized chemical synthesis technology, the core concept of which is to prepare peptides or nucleic acid molecules with specific sequences and functions by means of chemical synthesis according to the specific needs of the customer. The process involves three key steps: design, synthesis and labeling, each of which requires delicate handling and industry knowledge.

In the design phase, scientists need to define parameters such as the desired peptide or nucleic acid sequence, structure and function based on the client's needs. This requires an in-depth understanding of biology to be able to accurately predict and understand the nature and behavior of these biomolecules. It also requires certain experimental skills to be able to realize these designs in a laboratory setting.

In the synthesis phase, scientists synthesize designed peptides or nucleic acid fragments through chemical reactions. This process requires controlled conditions to ensure that the synthesized product has the desired properties and functions. Again, this requires a certain level of experimental skill.

In the labeling stage, scientists introduce fluorescein, radionuclides, or other labeling substances into the peptide or nucleic acid fragment to facilitate detection and analysis.

In the field of genetic engineering, custom synthesis of nucleic acids is one of the core technologies. By constructing synthetic DNA, siRNA, and other molecules, it is possible to achieve the regulation of cells and support gene therapy, vaccine research, and other fields. In the field of disease diagnosis, this synthesis technology also plays an important role, for example, PCR technology is based on the theoretical basis of DNA synthesis and developed a rapid and sensitive diagnostic technology.

Overall, custom synthesis of nucleic acids, as a high technology, has made significant contributions to the improvement of human health and quality of life.