Qinhuangdao High-Tech Energy-Saving Dorwin Co., Ltd.
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, decorative glass, wrought iron glass and cast glass
As a pioneer in China's blinds between glass, we have been developing and applying a patent for blinds between glass since 2003, and has received 13 patents so far including the patent we achieve in the United States. In 2004, the first blinds between glass production base in China was established by us,.In 2005, and obtained the US certification of IGCC in 2006,
OTK is a high-tech enterprise which is based on processing& manufacturing and technology innovation. The main products are hollow louver glass with independent intellectual property, the technology reaches the international advanced level. Focus on energy conservation since 2004,we provide high quality and energy-efficient products to the world. Products are exported to the United States, Canada, UK, Australia, South Korea. The annual export volume is 350,000pcs.