Liaoning Sunway Mechnical and Electrical Technology Co.,Ltd. in China. Built in the year 1997, over 300 workers, 150,000 ㎡, non-dust workshop, 17-year industry experience, ISO, CE certificated, one hour reach Dalian port, this is how we keep superior quality and competitive offers for global valued customer. Our main products cover: automatic(manual) revolving door(two-wing,three-wing,four-wing), automatic sliding door, spring door,broken-bridge aluminum window, aluminum-wood clad window, PU sandwich panel(for wall, roof, heat-preservation), cold room panel,etc.