Established in 2004, Qinhuangdao High-Tech Energy Saving Dorwin Co., LTD(OTK for short) Is located in Qinhuangdao, a beautiful coastal city in China. We are engaged in the production, development and sales of blinds between glass, Mosaic glass, decorative glass. The investment is 120 million RMB, covering an area of 50 hectares, and the workshop area is 36,000 square meters. Now we have a technical research and development team that take energy conservation and environmental protection as the core

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All the customers are our families and every cooperation starts with a good friendship.

A good team makes a good after-sales service system

To survive with credibility and develop with quality.Every production must be subject to strict quality control.

The strong productivity and convenient transportation makes every order delivering in time.

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