Stron door and window system was initiated by Haobo Window Control Technology and Italian STORO***. Stron door and window system is based on SolutionsDesignedByHOPO system scheme and STORO Italian origin system door and window hardware, introducing top system R&D engineers in door and window industry, rebuilding the R&D team of door and window products in home improvement system, and launching "stron door and window system".