青云翻译

After more than ten years of concentrated research and development to master the core patented technology

After more than 10 years of painstaking research and development to grasp of core patent technology

Using passes through ten remaining years of life to research and develop grasping with concentration the core patent technology

After 10 years with great concentration of R&D core patent technology

After more than 10 years of painstaking research and development to grasp of core patent technology