In terms of product research and development and technological improvement, we have always been willing to invest and make great efforts. We have set up a separate R & D department, and we have many R & D personnel for air filters and purification equipment. Among them, more than 70% of them have bachelor's degree or above. 

In terms of products, our products basically have their own patents, and the core components have added their own key and technology to improve and improve. 

With the improvement of products and the grasp of core technology, we can better control the quality of products, quality is guaranteed, all honors and recognition follow, practical patents, ISO, high-tech certification and other honors, let us appear on the stage of history again and again.