Qingdao K&R Technology company started from 2009. In the period of 10 years, we established the complete production line, product inspection department, and research and development department. In the development process, we meet many problems, however, we solve them one by one. So we have abundant experience on the filed of variable frequency drive. In the next 10 years, we believe that our company can create more high quality and advanced products to the market.