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Company History

This section traces the history of Daikyo, a company that has continued to achieve world-leading quality through the pursuit of excellence and a willingness to take on new challenges.


  1. 1964

    Commercialized butyl rubber

    At the time when natural rubber was state of the art, we developed a clean synthetic rubber formulation suitable for use as medical and pharmaceutical components.

  2. 1982

    Laminated rubber stoppers

    Developed a barrier fluoropolymer lamination technology to reduce interaction between drug substance and the component. This is leading technology in the market and has been adopted globally within pharmaceutical industry.

  3. 1988

    Laminated pistons

    Created pre-filled syringe systems with fully laminated pistons.

  4. 1990

    Daikyo CZ

    Based on high transparency COP resin, developed first containers meeting demanding needs of the pharmaceutical industry.

  5. 1991

    RB2 Coating

    Developed anti-sticking coating technology for components, as an alternative towards free silicone oil treatment.

  6. 1993

    Daikyo CZ vials

    First COP vials has been introduced to the market. This polymer-based container solution shows highest stress resistance and transparency at the same time meting requirements of the pharmaceutical industry.

  7. 1996

    Daikyo CZ Prefillable Syringes

    Fluoropolymer laminated piston combined with a CZ barrel make siliconization of the PFS barrel redundant.

  8. 2001

    CZ P3

    This customized COP resin formulation has been designed to protect light sensitive drugs. Containers based on this light-protective material complies with JP/EP/USP.

  9. 2006


    RSV certified components undergo in a closed ISO room environment washing process with final WFI rinse. This portfolio allows customers to omit component washing on their manufacturing sites.

  10. 2010


    Developed PLASCAP, next generation plastic caps with pre-assembled rubber stopper to replace aluminum caps, enabling one-step capping of vials.


    Together with West Pharmaceutical Services Inc. we developed CZ-RU (ready-to-use) containers, which are electron-beam sterilized.

  11. 2014


    Introduction of ready-to-use, validated steam sterilized components. This portfolio allows customers to reduce their manufacturing footprint by washing and sterilization of components.

  12. 2018


    Launch of highest quality components within the portfolio, including cutting edge automated vision inspection down to 0.01mm².


  1. 1954

    Kanegafuchi Gomu Kako Co., Ltd. founded

    Founded in Sumida-ku, Tokyo as a manufacturer of industrial rubber products.

  2. 1973

    Partnership with West Pharmaceutical Services, Inc.

    Partnership commenced with West Pharmaceutical Services, Inc. marking our start of working with global pharmaceutical companies.

  3. 1993

    Company name changed to Daikyo Seiko, Ltd.

    Changed the company name to “Daikyo”, indicating that the company provides overall packaging solutions, containers and components.

  4. 1996

    ISO 9001 certified

    Introduced quality management standards to meet global requirements.

  5. 2006

    Established Sano Haneda Plant Ⅱ

    Built a second plant to meet growing global demand.

  6. 2016

    ISO 15378 certified

    Accomplished ISO certification for manufacturing of primary packaging products for pharmaceutical use.

  7. 2017

    Moved the Head Office to Sano City

    Relocated the head office to Sano City, Tochigi Prefecture, the region where all manufacturing plants are located.

  8. 2018

    Established the Innovation Laboratory

    Established centralized R&D facility that serves as an integrated state of the art innovation hub.

  9. 2022

    Brandmark renewal

  10. Daikyo CZ🄬 is registered or trademarks of DAIKYO SEIKO, LTD. in Japan.
    CRYSTAL ZENITH🄬 is registered or trademarks of DAIKYO SEIKO,LTD. in Japan, the United States and other jurisdiction.
    PLASCAP🄬 is registered or trademarks of DAIKYO SEIKO, LTD. in Japan, the United States and other jurisdiction.
    Daikyo RSV🄬 is registered or trademarks of DAIKYO SEIKO,LTD. in the United states and other jurisdiction.
    Daikyo RUV 🄬is registered or trademarks of DAIKYO SEIKO,LTD. in the United states and other jurisdiction.

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