Qinhuangdao High-tech Energy-saving Dorwin Co.,Ltd (short for OTK)is a Sino-foreign joint venture enterprise which invested by China, America and Korea investors. Our company was established in 26th August 2004.It located in Qinhuangdao, which is a seaside city with beautiful scenery and good transportation conditions. The invested capital is 120 million RMB, The permanent assets are 45 million RMB. It covers an area of 40 acres, Facility area 33,000 sqm. There are more than 400 workers in our company, including one hundred professional and technician, Our company has the support of abundant fund and technology; the top-ranking managing team and system, the advanced quality management system.
OTK including mini-blind factory, wrought iron glass factory and decorative glass factory, We are specialized in manufacturing and selling Mini-Blind Glass, Wrought Iron Glass and decorative glass..

OTK is a high-tech enterprise which base on manufacture and processing and focus on technical innovation. Our company provides environmental and energy-saving products and service. Main product mini-blind glass owns the proprietary intellectual property rights; The technology has achieved the international advanced level and obtained various of patents. It has been list on key projects of the National Eleventh Five-Year Plan in 2007, and responsible for organizing of compiling trade criteria "Sealed insulating glass unit with shade inside" The company has got the certificate of quality management system certification ISO 9000 in 2005 and ISO 14000 in 2006.

Our company have excellent quality of products, exquisite skills, The products have been export to the U.S.A, Canada, Korea, Australia and so on. The domestic agencies have been spread in Beijing, Shanghai, Shenzhen, Wuhan etc.
Our company pays more attention to technology innovation, product innovation, concept innovation, management innovation. We promise to supply all the customers with satisfied goods and top service.