UJEN has been manufacturing hardware accessories, including hand screws and molds, for 45 years. We maintain strict quality control and are ISO 9001 certified. Our commitment is to create high-value handles that enhance their customers' product and brand value. UJEN is a leading manufacturer of high-quality hand screws in the screw parts industry. With over 40 years of expertise in plastic injection mold development, we have specialized in crafting precision rotary knobs and handles. We off