Insulin pen cartridge housings store insulin preparations, requiring ultra-high sealing, biocompatibility and drug stability protection, prohibiting drug leakage and contamination, ensuring accurate drug delivery. Traditional mechanical assembly has gaps, easy drug leakage, while adhesive bonding may react with insulin, affecting drug efficacy. DaokeDao laser welding adopts a low-heat, non-contact process, suitable for medical-grade COP and PC materials, forming a complete hermetic seal, completely isolating air and moisture, ensuring insulin activity and stability during shelf life. The weld is smooth and internal burr-free, no blocking of drug delivery channels, ensuring accurate and smooth insulin output. The process is particle-free and residue-free, fully complying with pharmaceutical packaging biocompatibility standards, no chemical leaching, safe for long-term clinical use. The equipment supports high-precision small-component welding, with compact structure, suitable for clean room production, production capacity 110 pieces per hour, pass rate ≥99.5%. It helps drug delivery device manufacturers improve product safety and reliability, ensuring stable drug delivery for diabetic patients.