Hengwei Cheung has a professional R & D of new products, technical personnel, quality control testing staff and technical services, the development of a high level of efficiency of the technical services team. R & D a number of senior engineers, including technical director with more than 30 years of industry experience in research and development. R & D departments give full play to the advantages of technology and personnel, uphold the concept of environmental protection, product research and development technology continue to make major breakthroughs, inde...