At the coming of Labor Day, Donper successfully passed the ISO9001 site audit.

ISO (International Organization for Standardization) is the world’s largest developer of 
voluntary International Standards. International Standards give state of the art 
specifications for products, services and good practice, helping to make industry more
efficient and effective. Developed through global consensus, they help to break down 
barriers to international trade.

Consequently, with a huge supplying capacity and meeting the needs of users Donper
bearing 48 years’ manufacturing base, is devoted in the development and utilization of 
high-end and intelligent products, aiming to be the excellent supplier of solar products. 
The products not only solve the problem of project 's installation, but also deal with
the appearance quality problem and effectively improve the image of the solar thermal project.