COMPANY MARK
The central electric light form represents the company name, Nakayama's initial letter "N". In addition, the outer oval shows the earth which is associated with soil and stone, implying the company produces construction machines. Furthermore, "N" goes through the earth setting our hopes on the company's continuous development. Overall, the whole mark looks like the Chinese character uv, which is also the first Chinese character of the company name in Japanese.
QUALITY POLICY
From the global point of view, we shall be a company that can offer first class quality in products, technical services, humanity and proposing ability to both clients and society.
QUALITY TARGET
All through the process of the job, we shall eliminate the potential defect, and maintain high quality.
FIVE VOWS ABOUT OUR BEHAVIOR
  1.Service
  We are committed to producing service to civil engineering projects.
  2.Reputation
  We strive to enhance our reputation as a manufacturer of reliable quality products.
  3.Skill
  We undertake to develop the skills, efficiency and well-being of our work force.
 4.Technology
  We will make every effort to accumulate and develop the most advanced technology to meet the needs of tomorrow.
  5.Consolidation
  We seek to consolidate our position as one of the leaders in crushing machinery technology and production.
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