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Qinhuangdao High-tech Energy-saving Dorwin Co.,Ltd(OTK for short)has more than 300 workers in our company, including one hundred professional and skilled workers, two advanced engineers, four vice advanced engineers, six engineers, eight assistant engineers, twenty-nine technicians. Our company has the support of abundant fund and technology; the top-ranking managing team and system, the advanced quality management system, OTK got the certificate of quality management system certification ISO 9001:2000 in 2005.

Contact Us

  • Add: No.1 of Haihe Road Haigang District Qinhuangdao Hebei Province,China PC:066004
  • Tel: +86-335-8507560 8016093
  • Fax: +86-335-8507560
  • Web: www.otkdoorglass.com
  • Email: [email protected]