Plasmid DNA and linear DNA serve as core raw materials and critical vectors for gene therapy, DNA vaccines, mRNA vaccines, and CAR-T cell therapies. As the "molecular transport vehicles" of biotechnology, high-quality plasmids directly determine the safety and efficacy of downstream therapeutics. Begelang specializes in core processes—including plasmid construction, high-density fermentation, efficient cell lysis, precision purification, and concentration-sterilization—providing comprehensive equipment and engineering services spanning the entire workflow, from laboratory R&D to large-scale industrial production. Our systems ensure a high recovery rate of supercoiled plasmids, low endotoxin levels, and the absence of host-cell residues, thereby meeting the stringent requirements for GMP-grade plasmid DNA within the CGT, vaccine, and recombinant protein drug sectors.