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OTK has strict control over the production process and quality control.


Before production, each product needs to be professionally designed, finalize the design accurated, every kind of raw material has to pass strict incoming inspection

In Production, product required materials are measured by precision instruments, each production process must go through strict control and 100% of the test, our company has several production lines and automation equipments, to ensure to provide high quality and stable mass production.

After production, finished product should be pass 100% detection, still need to pass the test that -94℉ no frost and dew point sampling observation experiment, test the blinds performance by the stretched machine, the test number of stretch more than 10,000 cycles.


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]
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