Yueqing Sanxing Hardware Co., Ltd was established in 1976, specialized in manufacture of architectural hardware, including various models of fittings for aluminum door&window, plastic steel and wooden door&window. Among the products, "press-on , movable window lock", "automatically-balanced pulley", "pull-push locks for doors&windows", "double pulleys", "single pulley", "automatically-regulating pulleys" and etc. have obtained national patents.