Founded in 2002, Zhejiang Ruiming Energy-Saving Door & Window Co., Ltd. is a technology type Sino-Hongkong Joint Venture which integrates the scientific research, production, sales, installation into a whole. It is equipped with the metal door and window project professional contracting second level and construction curtain wall project design special-item second level qualifications. It is one of the earliest enterprises in China that research into and develop the novel and energy-saving doors and windows.