Laboratory personnel use Hand Crimper to seal the Crimp Cap. The 3mm Butyl Septa is squeezed to fill the gap between Vial and Cap to achieve a perfect seal. The chromatographic consumables produced by Aijiren are for convenience. For laboratory users, Aijiren will continue to work hard on product research and development, technology upgrades, etc., to make more chromatographic consumables for the convenience of users’ experiments.