Seiju Kogyo Co., Ltd. 【ISO 9001】


The changes, inspired by the LRQA assessment, resulted in the introduction of a Best Practice approach to business and overall improved performance, leading to enhanced operational quality, reduced construction time, and more visible operational processes.

Since its establishment as a construction company in Shimizu, Shizuoka Prefecture in 1965, Seiju has focused its business on local public works projects. The company was the first in the industry to mechanize its construction sites, while efforts to develop human resources—including management engineering staff—have enabled Seiju to achieve its numerical targets and develop multi-skilled technical employees. In recent years, Seiju has been accepting orders continuously and striving to become the leading company in the area of large public works projects.

  • LRQA Assessment - Business Innovations
  • ISO9001 – A Powerful Business Tool
  • Continuous Improvement
  • Working with LRQA

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